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Poor man's openscad screw library

Created by
aubenc
Created on May 25, 2011
Featured on May 26, 2011

This is my humble take on a screw library to be used in your OpenSCAD scripts.

If you are serious, please be, you'll better use thingiverse.com/thing:8793 syvwlch.

Anyway, I had this thing for months in the lost projects folder suffering from some serious issues, well some of them remain (it doesn't render) and once the dust has been shaken it compiles quite nice and printable things.

Instead of functions, this thing uses loops.
Instead of rotate polyhedrons, this thing draws the polyhedron in a new set of points.

Just a couple of comments to help using this thing:

- I've found that a resolution of something like 1.5mm (PI/2 is what I use the most) works very well for threads that will be used with nuts made with a resolution of 0.5mm.

- I've printed the threads with a very low infill (0.2) but for the nuts, setting up this value (I've used 0.45) helped a lot with the overhang issue.

More pics @ aubenc.imgur.com/screws_threads_an_other_polyhedron_games

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Ex01 15x100x4.stl

677 kb / 241 downloads / 1 year ago

Ex02 nut 24x8 1...stl

499 kb / 366 downloads / 1 year ago

Ex03 15x30x4.stl

268 kb / 369 downloads / 1 year ago

Ex04 15x50plus3...stl

306 kb / 233 downloads / 1 year ago

Ex05 2rx 15x35x4.stl

632 kb / 200 downloads / 1 year ago

polytests.scad

3 kb / 368 downloads / 1 year ago

polyScrewThread.scad

4 kb / 429 downloads / 1 year ago

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Drop "polyScrewThread.scad" into your OpenSCAD library folder or the folder where you are writing your OpenSCAD script.

Use polytests.scad as a user's guide, refference, whatever.

Because this thing is made without much science, you'll need to tweak a little bit, sorry...

First print a nut (high res, see comments above), tweak the infill and/or the degrees for the shape of the thread.

Once your nut prints fine, print a short threaded rod, try to change the resolution of the thread, infill,... use your imagination.

I printed the provided examples and they all work fine without any cleaning, that's the reason why they look so ugly in the pictures.

Design bolted things.

Print bolted things.

Bolt things.

Keep on bolting!

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Poor man's openscad screw library

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