EDIT: Realized that this needs a 0.3 mm wall thickness to print without artifacting. Just letting you guys know.
The idea for this fidget spinner is threefold.
I'm really digging designing print-in-place mechanical objects right now.
I wanted to try a double-barreled print-in-place "bearing" to see if it works better than the single.
I had an idea for using the design to hack the infill to create a spinner that was weighted on the outer edge.
So, the concentric circle designs are the idea I came up with. Their is a .2 mm space between each ring, just tight enough to stay put when printed in my Anet A8 printer. What, hypothetically, should happen is that the printer will print at almost 100% infill on the outer wings, and, if I set the print infill to 10 or 20%, the spinner should have the majority of the density distributed to the outer edge, helping it spin longer.
I have not tried to print this yet. Cura said it will be a 15-hour print, so I will most likely wait for the weekend when I can keep an eye on it.
If any of you decide to print this, please share your results, as I am interested to see how it turns out.
Rafts:
No
Supports:
No
Infill:
5-10%
Notes:
Wall Thickness - 0.3 mm