about Templot Club cookie information pre-print options:    

click image to open Templot Club in a new tab
Templot club top logo
looking for Templot? - (free)



 you are not logged in  - Login | Join


receive all messages by email: info


Recent Topics
Front Page  Search  Image Gallery  Gallery Upload  My Account  Members  Help  
make a donation  
please click: important information for new members and first-time visitors Templot Companion - User Guide
            messages archive on Yahoo
page trail:  Templot Club > Forums > Trackbuilding topics > 3D Printed Track and Turnouts
main Templot web site

             Rating                           3D Printed Track and Turnouts
  Page:  First Page Previous Page  1  2  3  4  5       
 Start new topic   Reply blank   Printer friendly 
  Rate this topic  
AuthorMessage
 Clicked a link? Wrong message? Wait until the page has finished loading, click in the address bar and then press the Enter key. This is a timing bug in some browsers.
161st message | this message only posted: 17 Aug 2017 22:57
 PM  Reply with quote  Reply blank 
from:
Andrew Barrowman
USA

 

view images in gallery
view images as slides
Martin,

What would be a reasonable minimum thickness for the timbers?

I might also be able to reduce the cost by hollowing out some voids although that might not work because there is a charge for support material (I believe it's wax that is dissolved once the resin has cured.)

Andy
__________
message ref: 21803

 
 Clicked a link? Wrong message? Wait until the page has finished loading, click in the address bar and then press the Enter key. This is a timing bug in some browsers.
162nd message | this message only posted: 18 Aug 2017 00:22
 PM  Reply with quote  Reply blank 
from:
Martin Wynne
West Of The Severn, United Kingdom



view images in gallery
view images as slides

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: What would be a reasonable minimum thickness for the timbers?Hi Andrew,

Which bullhead flexible track are you aiming to match?

The two common sizes use the technical terms "thick" and "thin".

1. "Thin" is the original design aiming to match traditional rivetted ply with a sleeper thickness of 1/32" (0.8mm). That applies to SMP Scaleway, Ratio EMtrack bases, C&L original (thin), and now also DCC Concepts.

The height to rail top is 0.8mm sleepers + 0.6mm chair base + 1.9mm code 75 rail = 3.3mm overall.

The 0.6mm chair base is of course the essential feature which provides the daylight under the rail above the ballast, in contradistinction to most flat-bottom track.

SMP Scaleway may be a bit thinner to match their soldered copper-clad pointwork kits:

 3/64" SRBP copper laminate (1.2mm) + 1.9mm rail = 3.1mm overall.

Ratio EMtrack bases had 1.0mm sleepers but with only 0.4mm chair base, so the end result was the same.

2. "Thick" matches the new Peco bullhead and the C&L/Exactoscale (thick) bases, originally matching 1/16" (1.6mm) plywood:

 1.6mm sleeper + 0.6mm chair base + 1.9mm code 75 rail = 4.1mm overall

which also matches Peco code 75 flat-bottom to rail top.

There are pros and cons. The "thin" is prone to curling and gauge variations if not carefully stuck down, but generally regarded as easier to ballast. Lots of layouts have used it successfully.

The "thick" is generally more robust, stable and accurate, but more difficult to ballast (Peco foam inlay anyone? :)).

If you decide on turnout bases in multiple sections you don't really have much choice. It would have to be the thick version, if allowing for a sub-base.

Say a sheet of 40 thou (1.0mm) plasticard as the sub-base, with 0.6mm timber sections stuck onto it (with what, he asks?)

Or maybe 30 thou (0.8mm) plasticard or 1/32" plywood sub-base, with 0.8mm timber sections stuck onto it.

I can see the Peco bullhead rapidly dominating the market. As they do.

Over to you. :)

p.s. If doing this commercially you should obviously ignore my figures and check actual products yourself.

Martin.

__________
message ref: 21804

 
 Clicked a link? Wrong message? Wait until the page has finished loading, click in the address bar and then press the Enter key. This is a timing bug in some browsers.
163rd message | this message only posted: 18 Aug 2017 01:17
 PM  Reply with quote  Reply blank 
from:
Andrew Barrowman
USA

 

view images in gallery
view images as slides
Thank you Martin.

I suspect if it's one it has to be thick, but it would take but a few clicks of the mouse to slice the model down to thin.

I think the difference in cost might be quite significant so perhaps the customer would get to decide.

There might even be an ultra-thin version for further savings. The timbers might be packed together requiring separation and gluing onto sub-timbers. The reason for packing them is because there is a cost for the overall volume "box" the part occupies on the print platter. It's not as significant as the resin volume, but it's still a cost.

Andy
__________
message ref: 21805

 
This is topic ID = 2734     Page created at 15:54 (local time) Page:  First Page Previous Page  1  2  3  4  5     
You can type a quick reply to this topic here.

Click in the box to begin.


But to reply to an individual message, or to include images, attachments and formatted text, use the reply buttons on each message above.

To start a new topic in this forum, click the Start new topic button below.
To start a new topic in a different forum, click the Forum Jump drop-down list below.

             Start new topic 

 click to jump to a different forum:     Back to top of page

Templot Club > Forums > Trackbuilding topics > 3D Printed Track and Turnouts
about Templot Club

list recently active topics Templot Companion - User Guide - A-Z Index Old Templot Companion Please click: important information for new members and first-time visitors.
indexing link for search engines only

back to top of page


Please read this important note about copyright: Unless stated otherwise, all the files submitted to this web site are copyright and the property of the respective contributor. You are welcome to use them for your own personal non-commercial purposes, and in your messages on this web site. If you want to publish any of this material elsewhere or use it commercially, you must first obtain the owner's permission to do so.

The small print: All material submitted to this web site is the responsibility of the respective contributor. By submitting material to this web site you acknowledge that you accept full responsibility for the material submitted. The owner of this web site is not responsible for any content displayed here other than his own contributions. The owner of this web site may edit, modify or remove any content at any time without giving notice or reason.
Problems with this web site? Contact webmaster@templot.com.   This web site uses cookies: click for information.  
© 2017  

Powered by UltraBB - © 2009 Data 1 Systems