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Gear Draw

by Snille, published

Gear Draw by Snille Aug 19, 2012

Featured Thing!

Description

An art toy to be used to draw patterns on a paper. In the SketcUp file there are different sizes of the big inward gear.

Update: A friend found the real name of the thing its a: Spirograph - en.wikipedia.org/wiki/Spirograph
I didn't know that when I made it. :)

Recent Comments

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I thought the SAME thing(:

Pitch I don't remember. I basically left all at defaults in the plugin in SketchUp when I made the gears. I do know that the pressure angle is 20. :)

What is the pitch and pressure angle for the gear models in this set?

Thanks

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License

GNU - GPL
Gear Draw by Snille is licensed under the GNU - GPL license.

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Instructions

Print and enjoy. :)
The stl fits on a 140x140 Huxley bed.

Comments

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ApexDesign on Dec 21, 2012 said:

What is the pitch and pressure angle for the gear models in this set?

Thanks

Snille on Dec 21, 2012 said:

Pitch I don't remember. I basically left all at defaults in the plugin in SketchUp when I made the gears. I do know that the pressure angle is 20. :)

cymon on Sep 14, 2012 said:

I want another outside gear so I can get more variety from my existing set. Maybe a little smaller.

Snille on Sep 17, 2012 said:

There are two outside gears available in the SketchUp file. Then if you want you can use the Gear-plugin to create a new one at the size you want. Here you can find the gear plugin: http://www.ohyeahcad.com/downl... and if I remember correctly I used this formula "Teeth / 2 = Diameter". So if you want 100 teeth the diameter is 50mm. :) Pressure angle I left default (20.0)....

bjbsquared on Aug 26, 2012 said:

If I remember right, the original outer ring had holes for push pins such that the paper and ring could be fastened to a piece of cardboard. This would help keep the center as different gears are used..

strangeloop on Aug 25, 2012 said:

i have played with this as a kid :) now i shall print it :D

Rawpork on May 30, 2013 said:

I thought the SAME thing(:

notstarman on Aug 21, 2012 said:

Everytime I see a Spirograph I think of the quote from the simpsons.

Dr. S: Wait: did you know that there's a direct correlation between the decline of Spirograph and the rise in gang activity? Think about it.

http://thesimpsonsforever.tumb...

tadrow on Aug 21, 2012 said:

The original Spirograph gears had the holes laid out in a spiral, to maximize the number of variations available on each gear. It might be interesting to try to do that with these designs. Many thanks for bringing us the ability to tinker with the design ourselves.

sirmakesalot on Aug 20, 2012 said:

Technically called hypotrochoid or epitrochoid. I see you are using sketchup but if this was parametric...oh the possibilities!

brianhomer on Aug 20, 2012 said:

Which software you are using for the gear design.

Snille on Aug 20, 2012 said:

I'm using SketchUp with the gear-plugin from here: http://www.ohyeahcad.com/downl...

MacGyver on Aug 20, 2012 said:

I'm attempting to print one right now. My build platform is only 120x120 so I had to scale it down a bit. Hoping it still works slightly smaller.

MacGyver on Aug 29, 2012 said:

Even scaled down it seems to work pretty well.

laird on Aug 20, 2012 said:

Very cool. I used to spend a LOT of time with the Spirograph! It's cool that you invented it without knowing about the original.

Jaknil on Aug 20, 2012 said:

I agree! Here is a pat on the back for re-inventing it, it means you can come up with awesome ideas! *pat* :)

elspeth on Aug 19, 2012 said:

very nice

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