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gear-v3.scad

by mrob27, published

gear-v3.scad by mrob27 Jan 5, 2013
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11133Views 4113Downloads Found in Construction Toys
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Summary

Alorithmic LEGO(r) Technic compatible gear generator. The picture (from gear-27.stl) is an example of gears-v3.scad, a greatly improved adaptation of bjepson's gear.scad with all code included, round holes, and automatic parameter selection.

Instructions

Greatly improved LEGO(r) Technic gear generator. It now makes actual round holes (not nonagons) and automatically picks the hole parameters for you. More importantly you don't have to download any missing pieces elsewhere, all the code is included. "gear-v3.scad" is the best version.

On Jan 6th, I fixed a glitch illustrated by the JPG image (see thingiverse.com/image:224135 ). This was an error in the original MCAD gear module. The problem shows up in gears with a small number of teeth; "gear-v2.scad" is the old version, if you want to see the difference for yourself.

To use: Load gears-v3.scad into OpenSCAD and change "10" in the line "myGear(10);" to whatever number of teeth you want your gear to have. "gear-27.stl" is sample output.

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Whenever i try to render it, it says:
ERROR: Parser error in line 75: syntax error
ERROR: Compilation failed!
How can i fix this?

You have not told what software you are using (with version numbers).

I use OpenSCAD for Mac, version 2011.12 and the file works for me.

Nevermind I was changing the wrong thing. Thanks for the quick reply!

So it works now?

If not, I was just going to say you'd have to go back to an earlier version of OpenSCAD or debug it yourself.

Yes it works fine now.

Jun 26, 2016 - Modified Jun 26, 2016
mrob27 - in reply to vino88

Excellent! :D If you print it out, let us know how well it fits with other axles/gears (and what type of printer or printing service you used)

I am using OpenSCAD 2015.03-2 on Windows 10.

My son and I are playing with an old Lego Mindstorms set and I've been wanting to make custom-sized gears for a while. Thank you!

That's great! If you print it let me know what home printer (or commercial service) you used, and how it comes out. I haven't had the chance to calibrate the tolerances (fit).

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