Spirograph to Reduce Gear Jumps and Paper Slips

Note this is a remix of the larger outer gear and not the internal gears which will remain unchanged.

There were two frustrations with using 3Domas Spirograph:

1. The inner gears jumped out of the outer teeth if the incorrect force (strength or direction) is placed on the inner gear during use. I added a top layer to prevent the gear from jumping vertically from the outer teeth. This made it easier to use for kids.

2. The Spirograph tended to slide on the paper while drawing.  This ruined the cool designs the Spirograph makes.   So I created a bottom plate. The paper is sandwiched between the top and bottom pieces holding it in place with respect to the outer gear.  I also added a square toggle/hole to keep the two pieces from rotating with respect to each other

On my printer I also increased the size of every component by 150% before slicing to create a larger Spirograph.  This is personal preference, but resizing all the pieces for your printer's maximum size will allow you to make larger Spirograph designs. Note you must also increase 3Domas's gears by the same ratio.

Print Settings

Printer Brand: Monoprice

Printer: Maker Ultimate

**Rafts:** No

Supports:  No

**Resolution:** 0.2

Infill: 15%

**Filament:** Inland PLA+ Rainbow 
 

Notes: 

I used PLA+, but I suspect that many materials will work.
Original design: https://www.thingiverse.com/thing:905849
I recommend resizing the Spirograph & gears to fit your 3D printer bed. I was able to increase size 150% and still fit it on my print bed.  This allowed larger designs with the Spirogragh.  Just make sure the largest inner diameter of the pen point isn't larger than the paper itself.
I also attached IGES files if you want to play with models.

Category: Art Tools