April 7, 2022
Description
5/24/2018
I changed the files a little to make them more flexible in scaling to a 75% scale. I also added some extra M8 & M6 Nuts with 2 different tolerances in case my default .4mm tolerance is too tight for you. The full size version takes a little over 2 hours to print the parts, the 75% scale takes a little over 1 hour to print.
A friend and I were talking about this recently, so I decided to see if there was a 3d print design for it. I made a few minor modifications to the design that worked better for me.
This is the thread library I used for this: http://dkprojects.net/openscad-threads/ If you run the openscad file, you will need to download this for theSliders_WithNuts_Rev8.scad file. I used the M8 screw and changed theThread_Angle from the standard 30 degrees to 40 degrees so it would print better. I also used a .4mm tolerance fit between the screw & nut connection.
For the 100% scale version print one each of the following: TrammelGuide2_Mod_Rev8.stl Arm2_Mod_Rev12.stl Sliders_WithNuts_Rev8.stl
Optionally print one of these if the nuts are too tight M8Nuts_T5.stl T5 = .5mm tolerance between threads M8Nuts_T6.stl T6 = .6mm tolerance between threads
For the 75% scale version print one each of the following: TrammelGuide2_Mod_34Scale_Rev8.stl Arm2_Mod_34Scale_Rev12.stl Sliders_WithNuts_34Scale_Rev8.stl
Optionally print one of these if the nuts are too tight M6Nuts_T5.stl T5 = .5mm tolerance between threads M6Nuts_T6.stl T6 = .6mm tolerance between threads
Included are the openscad files & STL files and photos. Print 1 each of the STL files. I printed at 20% infill, but minimum infill should be sufficient.
Category: Mechanical ToysLicense:
Creative Commons — Attribution — Noncommercial
geodave
