after chatting and playing with it I think this is what I need to change:
- the angle of the cogs - more rounded and equal top and bottom
- place the outer circles further inwards as the holes towards the center work much better due to the pressure being applied...
design a few different ones and cut them at a smaller scale in card, (this one was in 5mm plywood) to test which works best and to try layering some together as I think this will help to
what other medium to draw with? - smaller chalk sticks/ graphite
smaller holes that slot in to the existing ones? so same spirograph can be used for multiple materials to draw with
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