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page trail:  Templot Club > Forums > Trackbuilding topics > 3D Printed Track and Turnouts
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             Rating                           3D Printed Track and Turnouts
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481st message | this message only posted: 3 Jun 2018 18:52
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from:
Stephen Freeman
Sandbach, United Kingdom



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Personally I think the code 83 from Peco has a better head width and fits the pandrol. In 7mm scale code 143 fits their pandrols. However, pandrols are not for everybody and I think clips could be a problem.

I will see if I can put some photos on tomorrow.
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482nd message | this message only posted: 8 Jun 2018 03:44
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from:
Andrew Barrowman
USA

 

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Martin Wynne wrote: Andrew Barrowman wrote: The big snag is that it would only work if the rail was printed along with the chairs and that would bring us back to my not exactly popular metal rail cap idea :)Hi Andy,

I don't think it was unpopular, just unknown.

There still are too many unknowns:

where to get supplies of capping
how to fix the capping
how to deal with switch blades
how to make electrical connections
how to attach rail joiners

Some of that could be experimented with, but folks can't even make a start without a supply of capping.

I think if you could demonstrate a working example with trains running over it, it could take off big time.

cheers,

Martin.
Hi Martin,

These are all good questions. I can provide some answers that may be sufficient, but I am in no position to provide the best answers. I only want to push the boundaries.

Anyone who can get the hang of Templot is quite capable (with a bit of help) of translating a Templot  turnout into a printable 3D model. Whether the rail is solid metal or plastic with a conductive metal cap is a bit of a distraction.

I think it's more about whether we want to embrace a technology that allows us to achieve the amount of detail we are willing to pay for versus the amount of time we are willing to spend.

Cheers,

Andy

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483rd message | this message only posted: 8 Jun 2018 07:07
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from:
Hayfield
United Kingdom

 

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Andy

From what I have seen track is the least important aspect in railway modelling. Most are unwilling to invest either time or money on it. This is echoed by the amount of support from the trade. It’s getting better but a long way behind other areas of the hobby
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484th message | this message only posted: 8 Jun 2018 12:00
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from:
Nigel Brown
 

 

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Hayfield wrote: Andy

From what I have seen track is the least important aspect in railway modelling. Most are unwilling to invest either time or money on it. This is echoed by the amount of support from the trade. It’s getting better but a long way behind other areas of the hobbyHi Hayfield

Don't think this is accurate. A lot may be happy with slapping down the Peco and working with the restrictions this imposes, but a lot of those interested in realistic models are working in gauges and/or scales where no proprietary track of that sort exists. They perforce have to build their own track, and most probably enjoy doing it.

There is a question of how far they are prepared to go, though. The question may be what visually makes a difference. I build track in 3mm/ft scale. Having chairs of around scale size matters. It gives the look I'm after. But the only standard chairs available are 3 bolt; however, although I should be using GWR 2 bolt this doesn't matter in the slightest, because you have to look extremely close in this scale to see the bolts anyway. Likewise I'm happy carving up standard chairs to make specialist chairs.

I'm happy building track using the components available. So any new system would need to have a significant advantage visually while not being especially more complex to build to attract my interest. I think I'd need to be working in 7mm/ft or above to be interested in other approaches.

Nigel


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485th message | this message only posted: 8 Jun 2018 12:18
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from:
Stephen Freeman
Sandbach, United Kingdom



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Nigel, If you want some 2 bolt GWR slide rail chairs you can try asking Alan Buttler of Modelu - he does some in 4mm scale, so I'm sure he should be able to oblige.
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486th message | this message only posted: 8 Jun 2018 16:48
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from:
Hayfield
United Kingdom

 

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Nigel

The number of modellers who build in unsupported gauges/scales is very small. I have both demonstrated and worked on a specialist trade track stand and whilst there is polite interest in hand built track most admit to either not having the time or skill or simply cannot be bothered

A sad situation which may improve as the Peco bullhead track catches on. 3D printing could also change matters if a simple low skill system could become available
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487th message | this message only posted: 8 Jun 2018 17:13
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from:
Nigel Brown
 

 

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Stephen Freeman wrote: Nigel, If you want some 2 bolt GWR slide rail chairs you can try asking Alan Buttler of Modelu - he does some in 4mm scale, so I'm sure he should be able to oblige.Stephen

The 3mm Society chairs are designed to fit 3mm Society rail. Which they do, quite nicely. Good reason for sticking with the those chairs, which include slide chairs. To be specific, each sprue contains 10 standard chairs, 1 slide chair and one check rail chair. Not too bothered about the check rail chair; the previous Society chairs didn't include one and I managed OK.

Cheers
Nigel

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488th message | this message only posted: 8 Jun 2018 17:22
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from:
Nigel Brown
 

 

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Hayfield wrote: Nigel

The number of modellers who build in unsupported gauges/scales is very small. I have both demonstrated and worked on a specialist trade track stand and whilst there is polite interest in hand built track most admit to either not having the time or skill or simply cannot be bothered

A sad situation which may improve as the Peco bullhead track catches on. 3D printing could also change matters if a simple low skill system could become availableHayfield

Depends what you call very small. All 2mm scale modellers build their own track, for example. I'd call 2mm scale significant. Yep there's a whole world out there which never thinks beyond Bachmann running on Peco, say. Nothing wrong with that; they have their own particular take on the hobby. Building your own track isn't essential to building a good model. There was an interesting and attractive SECR layout in a recent RM which used Peco settrack almost entirely. There are at times very good reasons for working at that end of the hobby.

But I'd say the number of people building their own track is significant. It supports firms like C&L. Don't think we need to expect more than that.

Nigel

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489th message | this message only posted: 8 Jun 2018 21:04
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from:
Tony W
North Notts., United Kingdom

 

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Hayfield wrote: Andy

From what I have seen track is the least important aspect in railway modelling. Most are unwilling to invest either time or money on it. This is echoed by the amount of support from the trade. It’s getting better but a long way behind other areas of the hobby
It seems to me that trackwork has always been one of the Cinderella aspects of the hobby. In the early days this could be put down to a lack of prototype information and / or the lack of suitable components. Although this situation has improved dramatically over the last 50 years, there still seems to be something of a blind spot in some respects. The standard of commercial RTR track has certainly improved, but still leaves something to be desired once one starts to appreciate what real track looks like. It certainly has not kept up with the improvement in the rolling stock that runs on it.
It is up to the individual to make the choice and for most, hand built, or even kit built track will be a step too far. So what Andrew is hoping to develop is in my view to be commended as this is a further method of track production. It will doubtless come with the ever onward march of technology.
I have done many demos of P4 turnout construction at shows and all too often am greeted with the reply, that it is all very nice, but beyond me. I think it needs a certain type of individual, even with encouragement, to take that first step to self improvement and yes there will be failures, but one hopes that they will learn from these mistakes and improve. However, for most, what the trade provides will always suffice.
Regards
Tony.

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490th message | this message only posted: 9 Jun 2018 00:03
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from:
Andrew Barrowman
USA

 

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Tony W wrote: Hayfield wrote: Andy

From what I have seen track is the least important aspect in railway modelling. Most are unwilling to invest either time or money on it. This is echoed by the amount of support from the trade. It’s getting better but a long way behind other areas of the hobby
It seems to me that trackwork has always been one of the Cinderella aspects of the hobby. In the early days this could be put down to a lack of prototype information and / or the lack of suitable components. Although this situation has improved dramatically over the last 50 years, there still seems to be something of a blind spot in some respects. The standard of commercial RTR track has certainly improved, but still leaves something to be desired once one starts to appreciate what real track looks like. It certainly has not kept up with the improvement in the rolling stock that runs on it.
It is up to the individual to make the choice and for most, hand built, or even kit built track will be a step too far. So what Andrew is hoping to develop is in my view to be commended as this is a further method of track production. It will doubtless come with the ever onward march of technology.
I have done many demos of P4 turnout construction at shows and all too often am greeted with the reply, that it is all very nice, but beyond me. I think it needs a certain type of individual, even with encouragement, to take that first step to self improvement and yes there will be failures, but one hopes that they will learn from these mistakes and improve. However, for most, what the trade provides will always suffice.
Regards
Tony.
Hi Tony,

I think you hit the nail on the head. I'm not trying to provide a perfect solution. All I'm trying to do is encourage others to explore the options that recent technology presents.

Martin's work is truly a magnum opus in model railway (and even real railway) construction. I'd like to see it move to the next level. 3D printing might be one way to get there.

Andy

 

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491st message | this message only posted: 9 Jun 2018 12:28
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from:
Martin Wynne
West Of The Severn, United Kingdom



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Please do not send requests for help direct to me via email or PM.

Post your questions on the forum where everyone can see them and add helpful replies.
Andrew Barrowman wrote:All I'm trying to do is encourage others to explore the options that recent technology presents.

Martin's work is truly a magnum opus in model railway (and even real railway) construction. I'd like to see it move to the next level. 3D printing might be one way to get there.
Hi Andy,

I have now released the open-sourced Templot files:

 http://85a.co.uk/forum/view_topic.php?id=3282&forum_id=25

which includes the code for the DXF export (dxf_unit.pas).

So if you or someone else wants to integrate your DXF chair files into the export, it's doable. (Assuming you are releasing them as public domain or under the GPL.)

It would obviously be a great step forward to have the chairs already on the DXF export. Or create a 3D print file directly from OpenTemplot. :)

There is already a half-finished function to mark the REA chair positions on the templates, see the chairs_unit.pas file. It would be great if someone wants to take it up and progress it. Bearing in mind that it's a minefield of conflicting prototype data -- see the recent topic on blunt nose location.

cheers,

Martin.

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492nd message | this message only posted: 11 Jun 2018 04:07
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from:
Andrew Barrowman
USA

 

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I've created a panel of bullhead chairs with jaw dimensions that might be suitable for various types of rail. There's a stick of ten chairs for each of the six variants. If you do order a sample please draw a map of each stick before you dice them up.

You should be able to find them here:

https://www.shapeways.com/product/XYMF4V9E6/tracksamp3za?key=eb508581f7f70c61d232931fe68c2865

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493rd message | this message only posted: 11 Jun 2018 06:16
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from:
Hayfield
United Kingdom

 

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Andy

Will buy some when I order next time, just out of interest what would the cost be if they were sold as 4 panels (240 chairs) rather than one
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494th message | this message only posted: 11 Jun 2018 07:46
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from:
rodney_hills
United Kingdom

 

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Andrew Barrowman wrote: I've created a panel of bullhead chairs with jaw dimensions that might be suitable for various types of rail. There's a stick of ten chairs for each of the six variants. If you do order a sample please draw a map of each stick before you dice them up.

You should be able to find them here:

https://www.shapeways.com/product/XYMF4V9E6/tracksamp3za?key=eb508581f7f70c61d232931fe68c2865
Hello Andrew,
Please could you make these chairs available as a file, for those who can 3D print, I can't see that I can do that from the Shapeways site?

I just took delivery of a 3D printer : 
http://www.amazon.co.uk/Desktop-Printer-Extruder-Printers-Black/dp/B00QBZN6EA/ref=sr_1_2?s=industrial&ie=UTF8&qid=1445720716&sr=1-2&keywords=3d+printer

Not setup yet, but hopefully soon!
Once it is going, I am prepared to print the odd sample for UK members following this topic.


Regards, Rodney Hills




















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495th message | this message only posted: 11 Jun 2018 14:47
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from:
Rob Manchester
Manchester



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Andrew Barrowman wrote: I've created a panel of bullhead chairs with jaw dimensions that might be suitable for various types of rail. There's a stick of ten chairs for each of the six variants. If you do order a sample please draw a map of each stick before you dice them up.

You should be able to find them here:

https://www.shapeways.com/product/XYMF4V9E6/tracksamp3za?key=eb508581f7f70c61d232931fe68c2865
Hi Andy,

Good idea. I will buy some when I order something else from Shapeways and report back or maybe take up Rodney's kind offer to print them.

You may want to label them as 4mm scale chairs on Shapeways rather than OO - it is just how far apart the chairs are that defines the gauge :D

Rob


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496th message | this message only posted: 11 Jun 2018 19:35
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from:
Andrew Barrowman
USA

 

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Hayfield wrote: Andy

Will buy some when I order next time, just out of interest what would the cost be if they were sold as 4 panels (240 chairs) rather than one
Hi John,

At cost a four panel array of 240 chairs would be $6.90, versus $4.32 for the single panel of 60.

That's about 2.9 cents per chair. Including markup the price would be about the same as C&L chairs.

Andy.

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497th message | this message only posted: 11 Jun 2018 19:43
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from:
Andrew Barrowman
USA

 

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rodney_hills wrote: Hello Andrew,
Please could you make these chairs available as a file, for those who can 3D print, I can't see that I can do that from the Shapeways site?

I just took delivery of a 3D printer : 
http://www.amazon.co.uk/Desktop-Printer-Extruder-Printers-Black/dp/B00QBZN6EA/ref=sr_1_2?s=industrial&ie=UTF8&qid=1445720716&sr=1-2&keywords=3d+printer

Not setup yet, but hopefully soon!
Once it is going, I am prepared to print the odd sample for UK members following this topic.

Regards, Rodney Hills
Hi Rodney,

Here's the STL file. I'm not confident this will print properly on your printer. It's really optimized for the Shapeways resin process, but there's no harm in giving it a try.

Are you printing with PLA or ABS?

Andy

 

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Attachment: TrackSamp3za.stl (Downloaded 19 times)
 
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498th message | this message only posted: 11 Jun 2018 20:53
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from:
Stephen Freeman
Sandbach, United Kingdom



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Hi I think it may have been some time since you bought any C&,L chairs. The current retail price is £,27.50 for 500.
Andrew Barrowman wrote: Hayfield wrote: Andy

Will buy some when I order next time, just out of interest what would the cost be if they were sold as 4 panels (240 chairs) rather than one
Hi John,

At cost a four panel array of 240 chairs would be $6.90, versus $4.32 for the single panel of 60.

That's about 2.9 cents per chair. Including markup the price would be about the same as C&L chairs.

Andy.


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499th message | this message only posted: 11 Jun 2018 21:33
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from:
Andrew Barrowman
USA

 

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Stephen Freeman wrote: Hi I think it may have been some time since you bought any C&,L chairs. The current retail price is £,27.50 for 500.
Hi Stephen,

My price is "at cost" to Shapeways. If I was marking it up it would probably double :)

Andy

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500th message | this message only posted: 11 Jun 2018 21:42
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from:
Andrew Barrowman
USA

 

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Here's a map of the chairs.


I've labeled the six "sticks" A through F. I suggest you use some means to be able to identify which stick a chair came from. Keep them in envelopes perhaps, or even paint them different colours? We will get into a terrible pickle if we get our wires crossed :)

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501st message | this message only posted: 12 Jun 2018 07:15
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from:
rodney_hills
United Kingdom

 

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Andrew Barrowman wrote: rodney_hills wrote: Hello Andrew,
Please could you make these chairs available as a file, for those who can 3D print, I can't see that I can do that from the Shapeways site?

I just took delivery of a 3D printer : 
http://www.amazon.co.uk/Desktop-Printer-Extruder-Printers-Black/dp/B00QBZN6EA/ref=sr_1_2?s=industrial&ie=UTF8&qid=1445720716&sr=1-2&keywords=3d+printer

Not setup yet, but hopefully soon!
Once it is going, I am prepared to print the odd sample for UK members following this topic.

Regards, Rodney Hills
Hi Rodney,

Here's the STL file. I'm not confident this will print properly on your printer. It's really optimized for the Shapeways resin process, but there's no harm in giving it a try.

Are you printing with PLA or ABS?

Andy

 
Andy,
Thank you.

This is the supplier that other MERG members have recommend to me.

https://www.filamentive.com/3d-printer-filament-materials-guide/

I have bought

1 kg of white R-ABS
750g of black ASA
50g sample of R-PLA (black)
50g sample of R-ABS (black)
50g sample of WoodPLA (brown)


BTW your preceding post is number 500 in the topic!

Rgds, Rodney
-




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502nd message | this message only posted: 12 Jun 2018 07:20
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from:
Hayfield
United Kingdom

 

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Andy

Thanks, at about £6.30 before VAT and postage so appx £7.50 per for 240 and £15 for 2 packs even adding postage the price now is very competitive, you could even put in a bit of a mark up which will go someway to recover the development costs, or par for additions

Perhaps a sprue with slide, slab and bracket and bridge chairs. Now this would be cooking on gas
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503rd message | this message only posted: 12 Jun 2018 10:13
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from:
richard_t
Nr. Spalding, South Holland, United Kingdom



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With the 7mm chairs I've been doing, I've hit two issues when trying to maximize the number of chairs produced in one hit. First is the file size of the STL file (64mb), which can be overcome somewhat by compressing the files before they are uploaded.


The second is the maximum number of triangles per print, which is a million for FUD/FED. I must admit though I don't really know what I'm doing when it comes to optimizing the print for Shapeways. I design the chairs, with flowing fillets and the like, and I think they look pretty good when rendered on screen. I then output to STL file, which has three quality parameters which aren't very well documented (Surface Deviation, Normal Deviation and Max Edge Length), and then upload. If I hit the "too many triangles" error, I adjust the parameters until I don't - although I'm not really sure what the practical limits of the parameters are, and how they would affect the final print (i.e. am I mucking about with settings that I'd never notice on the final print).


Unfortunately using the above method, I can only print 72 chairs per print before the output starts to look horrid in Shapeways own viewer, and the last time I checked, this worked out at 13p each in Smooth Fine Detail Plastic (what was FUD). That's ignoring postage, and the Pound fluctuations against the Euro.


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504th message | this message only posted: 12 Jun 2018 17:00
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Andrew Barrowman
USA

 

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Hi Richard,

I ran into the same problem when I added a lot of fillets etc. I decided they were invisible at 1/76 anyway and stripped them all off. I could actually print 240 chairs at a time with Shapeways and probably a bit more but I think I'm pushing the limit.

Maybe you could try removing all the smoothing on a test print then selectively add some of it back in the areas where it might be most effective?

Andy
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505th message | this message only posted: 12 Jun 2018 17:15
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from:
Andrew Barrowman
USA

 

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rodney_hills wroteAndy,
Thank you.

This is the supplier that other MERG members have recommend to me.

https://www.filamentive.com/3d-printer-filament-materials-guide/

I have bought

1 kg of white R-ABS
750g of black ASA
50g sample of R-PLA (black)
50g sample of R-ABS (black)
50g sample of WoodPLA (brown)


BTW your preceding post is number 500 in the topic!

Rgds, Rodney
-
Hi Rodney,

I see there is something called PETg (P.E.T. plus glycol). It's supposed to have a lot of the advantages of ABS without the disadvantages. Bit more expensive than PLA, but unless you are using G scale, material cost isn't a major factor.

There's a review here https://all3dp.com/1/petg-filament-3d-printing/

I'm going to order some to see how it does.

Andy

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506th message | this message only posted: 17 Jun 2018 12:59
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from:
Stephen Freeman
Sandbach, United Kingdom



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Hi,
just for the sake of clarity, did you use Professional Plastic or Versatile Plastic? If the latter, did you consider the former?

Andrew Barrowman wrote: Looks like we can forget about the HP nylon material. It is quite robust but the definition is not good. The bolts/screws on the chairs are barely visible. The jaws are also quite inconsistent. I can do a lot better with my own FDM printer.

If we want hi-fi chairs they will have to be printed in the rather brittle resin, at least for now.


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507th message | this message only posted: 17 Jun 2018 17:30
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Andrew Barrowman
USA

 

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Stephen Freeman wrote: Hi,
just for the sake of clarity, did you use Professional Plastic or Versatile Plastic? If the latter, did you consider the former?
Hi Stephen,

Shapeways now calls HP nylon "Professional Plastic".

I printed some test pieces in Versatile Plastic (sintered nylon) some time ago. The results were actually better than those with the new Prof. Plastic, but the definition was a bit lacking.

The chairs look a bit like they had been sand-blasted although I think it might be possible to get satisfactory results by beefing-up the chairs in certain areas to compensate for that effect. The material is strong and the chairs are quite robust. No problem forcing rails through the chairs at the wings and check flares.

This is sintered nylon (Versatile Plastic).


Versatile Plastic on the left, Frosted Ultra Detail on the right.


The definition is clearly much better with the FUD material, but with a bit of tweaking I think it should be possible to print quite satisfactory and practical turnout bases in Versatile Plastic - it's less expensive too.

Don't be put off by the apparent "rounding" of the corners on the timbers. Photos seem to accentuate it. I'm holding the sample in my hand and it looks far better than my photos :)

Cheers,
Andy



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508th message | this message only posted: 17 Jun 2018 17:48
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from:
Andrew Barrowman
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Andrew Barrowman wrote: Hi Rodney,

I see there is something called PETg (P.E.T. plus glycol). It's supposed to have a lot of the advantages of ABS without the disadvantages. Bit more expensive than PLA, but unless you are using G scale, material cost isn't a major factor.

There's a review here https://all3dp.com/1/petg-filament-3d-printing/

I'm going to order some to see how it does.

Andy
Well, the spool of PETg arrived yesterday and I printed some test chairs. I'm not going to show you the results :)

One of the features of PETg is it's ability to "bridge" over unsupported gaps. That can be useful, but based on my prints it tends to form bridges where there should be none. That's a problem when printing chairs because the flow of material is frequently interrupted. It might be possible to create custom print software that prints each chair all in one go but that's a non-trivial project.

So PETg is probably very good for structural items like servo-brackets, chassis blocks, sleepers/timbers etc, but I don't think it's going to work for printed chairs. I'll muck about with it some more but I'm not optimistic.

In terms of chair detail on a home filament printer the best material I've found so far is still good old PLA
https://en.wikipedia.org/wiki/Polylactic_acid


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509th message | this message only posted: 17 Jun 2018 17:49
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from:
Stephen Freeman
Sandbach, United Kingdom



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Thanks, I think if you can get anywhere near to FUD could be a winner.
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510th message | this message only posted: 17 Jun 2018 18:10
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Andrew Barrowman
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Stephen Freeman wrote: Thanks, I think if you can get anywhere near to FUD could be a winner.If you want to get your hands on the crossing sample you can now. It should show up in the link below. Comes in stunning white sintered nylon, or black for a buck more.


https://www.shapeways.com/product/PUM8QNZQY/crossingsv3no7?optionId=65842958&key=43309569e65accaba461fa9147f5b3f9&li=shop-inventory

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511th message | this message only posted: 17 Jun 2018 18:12
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rodney_hills
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Andrew,
Thanks.

My 3d printer still not yet going, domestic issues, not printer problems : - (

My interests at present are 00-SF and
Multigauge:
32/45/80 mm,  1 1/4, 1 3/4, 3 1/8 inches
Resembles G scale sleepering but longer.

Regards
Rodney


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512th message | this message only posted: 17 Jun 2018 22:33
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Andrew Barrowman
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Hi Rodney,

If you plan to use printed parts outdoors, some of the plastic materials don't handle UV light very well. It's possible some types of paint might be able to make them more resistant.

Andy

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513th message | this message only posted: 18 Jun 2018 04:58
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rodney_hills
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Andy,
I was going to try ASA (Acrylonitrile Styrene Acrylate)
outdoors
https://www.filamentive.com/product-category/asa-3d-printer-filament/

See eg
https://rigid.ink/blogs/news/175845063-the-difference-between-abs-and-asa

Regards, Rodney

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514th message | this message only posted: 18 Jun 2018 18:33
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Andrew Barrowman
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rodney_hills wrote: Andy,
I was going to try ASA (Acrylonitrile Styrene Acrylate)
outdoors
https://www.filamentive.com/product-category/asa-3d-printer-filament/

See eg
https://rigid.ink/blogs/news/175845063-the-difference-between-abs-and-asa

Regards, Rodney
Thanks Rodney,

That's a new one on me, but it definitely looks like the right stuff for outdoors.

When you get the printer up and running I'd suggest you start with PLA until you get the hang of things. ASA might be slightly finicky.

Best,
Andy

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515th message | this message only posted: 18 Jun 2018 18:38
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Andrew Barrowman
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The rail sizing chair samples have arrived. Look good too. Unfortunately, without makeup, they are not very photogenic.





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Andrew Barrowman
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"Mr. DeMille, I'm ready for my close-up."

Also available in terrifying detail in the image gallery. Maybe I should have cut off the pips left over from the sprues? How do they compare with C&L etc?



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517th message | this message only posted: 19 Jun 2018 06:41
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from:
Hayfield
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Andrew Barrowman wrote: "Mr. DeMille, I'm ready for my close-up."

Also available in terrifying detail in the image gallery. Maybe I should have cut off the pips left over from the sprues? How do they compare with C&L etc?


In this view every bit as good
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518th message | this message only posted: 27 Jun 2018 04:06
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Andrew Barrowman
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Andrew Barrowman wrote: I've created a panel of bullhead chairs with jaw dimensions that might be suitable for various types of rail. There's a stick of ten chairs for each of the six variants. If you do order a sample please draw a map of each stick before you dice them up.

You should be able to find them here:

https://www.shapeways.com/product/XYMF4V9E6/tracksamp3za?key=eb508581f7f70c61d232931fe68c2865
Gratings!

I'd like to finalize the jaw dimensions of all sorts chairs for various types of rail, but I'm a wee bit stuck without any feedback. Chairs printed in resin produce excellent detail but they do not forgive a lot of stress or strain.

As Scotty might have said to Kirk (in a really bad Scottish accent),

"Ye canny have yer cake and eat it too."

:)



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519th message | this message only posted: 27 Jun 2018 06:43
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Stephen Freeman
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Good Moaning,

Allo Allo it'll probably be a week or so before the chairs are with me, having just ordered.:)
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Hayfield
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Andrew Barrowman wrote: Andrew Barrowman wrote: I've created a panel of bullhead chairs with jaw dimensions that might be suitable for various types of rail. There's a stick of ten chairs for each of the six variants. If you do order a sample please draw a map of each stick before you dice them up.

You should be able to find them here:

https://www.shapeways.com/product/XYMF4V9E6/tracksamp3za?key=eb508581f7f70c61d232931fe68c2865
Gratings!

I'd like to finalize the jaw dimensions of all sorts chairs for various types of rail, but I'm a wee bit stuck without any feedback. Chairs printed in resin produce excellent detail but they do not forgive a lot of stress or strain.

As Scotty might have said to Kirk (in a really bad Scottish accent),

"Ye canny have yer cake and eat it too."

:)


Andy
I have just ordered a set, whilst £3.90 for a trial set and postage of £4.50 is a small price to pay for a prototype and I think the least those of us who build track can do to support you, for it to be viable thought must be given to the most cost effective way of producing chairs.

Firstly as postage will be in the region of £4.50 I think you should maximise the number of chairs per panel and mak an option for a multi panel to be available, which if I am not mistaken will greatly reduce the costs

Secondly I expect the majority of buyers will be buying them to make turnout and crossings, I would think the addition of slide, bridge and crossing nose chairs on the same sprue would be a great advantage, even better if check chairs could also be added

Ideally a sprue of the correct chairs for a specific turnout of crossing would be the icing on the cake, but may be a step too far for most

Still I expect the order will arrive in 5 to 7 days time, 

Off the Rails suggest soaking the chairs in white spirit for 30 mins to dissolve unwanted residue, 

How would you like us to test the chairs?

Do they have a cant? 

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