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page trail:  Templot Club > Forums > Trackbuilding topics > Laser cut Templot track formations
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                 Laser cut Templot track formations
     
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1st message | this message only posted: 25 Jun 2020 19:45
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PHP
 

 

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Maybe a little bit controversial but I laser cut Templot plans for people.

I start with the regular DXF export from Templot. I take all the available data but only the sleeper and rail portions are needed for laser cutting.



I process the file to simplify the rails as we don't want all the rail made into the base. I also make sure the webs between the sleepers is narrower than the rails to ensure they will be invisible once ballasted. This stage takes between 10mins and an hour or so depending on the size of the formation. I usually have to check the plan hasn't got any overlapping sleepers etc.



I then split the formation up into track panels to fit my wood and ensuring the grain is running vertically with the sleepers as much as possible.



A track panel fresh off the laser. 



The formation with panels removed. Ideally laid over the templot print to help with the positioning of the track etc. Expert track builders tell me they can pick it up from here and know how to lay the track without the need of the print out. Each to their own.



I plan to supply chairs with moulded in positioning pins that will fit in to lasercut holes correctly added to the sleepers. This will reduce significantly the need for track gauges.

I hope you like. 


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Attachment: Templot DXF.jpeg (Downloaded 10 times)
 
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2nd message | this message only posted: 25 Jun 2020 20:22
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Tom Allen
United Kingdom

 

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looks really good. So the rail line is a wooden web ?
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3rd message | this message only posted: 25 Jun 2020 20:49
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PHP
 

 

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Tom Allen wrote: looks really good. So the rail line is a wooden web ?Yes Tom, the base is cut from ply. This is 3mm ply as it is 7mm scale formation. I would use 1.5mm ply for 4mm scale to closely match proprietary track.
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4th message | this message only posted: 25 Jun 2020 21:30
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from:
Martin Wynne
West Of The Severn, United Kingdom



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PHP wrote:Expert track builders tell me they can pick it up from here and know how to lay the track without the need of the print out.
I'm not at all happy at Templot being used in this way, using a timbering base instead of a proper detailed template.

Please don't use the name Templot in connection with these bases unless you also supply a Templot printed template with them.

Martin.

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5th message | this message only posted: 25 Jun 2020 22:12
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PHP
 

 

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Martin Wynne wrote: PHP wrote:Expert track builders tell me they can pick it up from here and know how to lay the track without the need of the print out.
I'm not at all happy at Templot being used in this way, using a timbering base instead of a proper detailed template.

Please don't use the name Templot in connection with these bases unless you also supply a Templot printed template with them.

Martin.
Martin, 
Sure, I will not supply Templot formations of my own creation without all the files to print the paper copy.
On the dxf export file, is it possible to mark the chair positions? It seems this is part of the 3d setup so is this temporarily switched off?


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6th message | this message only posted: 25 Jun 2020 22:51
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from:
Martin Wynne
West Of The Severn, United Kingdom



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PHP wrote:On the dxf export file, is it possible to mark the chair positions? It seems this is part of the 3d setup so is this temporarily switched off?Hi Phil,

There isn't really such a thing as "the chair positions". It's a complex subject, and varies with the different prototypes and periods.

I do have an ongoing, but currently stalled, project to show REA bullhead chairing on the 2D templates (and hopefully also GWR):







It's a long way from being ready, and got more complex after I obtained a 3D printer -- I'm hoping to get Templot to export the files needed for direct 3D printing of track.




Unfortunately I don't get much time to work on it, my computer time being mostly taken up in supporting the current Templot functions for users. For example I recently spent several days on a re-write of the make diamond-crossing at intersection function.

So don't hold your breath for chairing in the DXF any time soon. You might like to look at Andy B's work on adding chairing to Templot's DXF files:

 https://85a.co.uk/forum/view_topic.php?id=2734&forum_id=6

(The first few pages are from 2016 and a bit out-of-date)

cheers,

Martin.

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7th message | this message only posted: 25 Jun 2020 23:04
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PHP
 

 

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Thanks Martin. I can add chair blocks and orient them with a macro in my CAD program. Had the chair positions been already placed, it would have made my processes slightly easier.

The sleeper centre line over length stays the same when I made the changers in the generator as you suggested. The sleepers are now square, but thats not my objective. I was trying to get the sleeper centre line to the length of the sleeper. Is this a possible?
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8th message | this message only posted: 25 Jun 2020 23:30
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from:
Martin Wynne
West Of The Severn, United Kingdom



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PHP wrote: I was trying to get the sleeper centre line to the length of the sleeper. Is this a possible?Hi Phil,

Sorry no, that's not possible at present. The timber centre-line is a fixed length. You can omit the centre-lines, but not change the length. I could look at making it adjustable in the next program update, but I'm puzzled why you need it to be the exact length of the timber?

cheers,

Martin.

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9th message | this message only posted: 25 Jun 2020 23:44
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PHP
 

 

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Basically speed. I can save 75% of the sleeper load by dealing with a single line instead of four lines. On the larger formations that’s a good thing when manipulating the data. I don’t need a rectangle sleeper shape to inform the cnc/laser software to cut a rectangle. Just the centre path of the sleeper will do.

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10th message | this message only posted: 26 Jun 2020 00:11
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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.
PHP wrote: Just the centre path of the sleeper will do.Hi Phil,

Set the timber width to zero in the timbering data. Modify group to match on the whole plan.

You will get 2 effective centre-lines (i.e. both timber edges), but no doubt you can deal with that in your CAD.

Turn off the centre-lines and extension marks in the generator, and rebuild all.

cheers,

Martin.

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11th message | this message only posted: 26 Jun 2020 12:28
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from:
Tom Allen
United Kingdom

 

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this is a great idea, i've had people say they prefer the wood finish over plastic.
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12th message | this message only posted: 26 Jun 2020 21:47
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from:
Tom Allen
United Kingdom

 

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what's the maximum size you can cut out.
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13th message | this message only posted: 26 Jun 2020 22:03
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PHP
 

 

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That’s not really the limiting factor. The biggest issues are material size and availability and practical concerns such as delivery.

I’ll split onto smaller sizes and the panels fit together like jigsaw pieces.
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14th message | this message only posted: 27 Jun 2020 22:50
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from:
Tom Allen
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if i gave you a box file could you give me a quote
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15th message | this message only posted: 27 Jun 2020 23:16
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PHP
 

 

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Hi Tom, certainly. Email me phil@intentio.co.uk
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16th message | this message only posted: 28 Jun 2020 14:38
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Tom Allen
United Kingdom

 

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get it over to you soon.
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