Minimalist wool winder (not as cool as http://www.thingiverse.com/thing:13816 ! - go there if you are looking for a usable version ;-))
Short working demo:
While I used string in thingiverse.com/thing:17822 I now managed to use a gear!
Unfortunaly, at this scale, it does not run very smoothly. Sometimes it needs to be pushed further or wiggled around.
But the heck with it, it's an earring. Who would need such tiny skeins anyway? :-) If anyone wants to give me a UV-resin or SLS printer though, I'd happily accept.
For a angled gear it is too small of a print. I hate gears at this scale :-)
I would appreciate any suggestions though!
If you don't know how these work: The thing turns string into a skein (through magic!).
The skein holder spins arround the base and turns itself. This way a tidy criss-cross pattern will be created instead of a random lump of string.
This is the reason why the top gear goes arround the axis. The axis remains still and acts as friction wheel or gear to turn the skein at a lower rate.
(I hope I got it explained right, it's late here...)
More Info on the semi-daily-earrings: thingiverse.com/thing:7120
Print. Assemble with instant glue. Check out the Sketchup/Images for assembly. I tried to make it glue-less but it's either too tight or too loose to withstand the force when the crank is turned.
Hints: First stick the hollow gear into the big hole, then the crank-gear-part (use tweezers, insert it 45Â°, it's a little fiddly to make the gears go into each other AND into the holes ;-) )
Use tweezers or something that stays in place to press the crank-gear in place. Glue the crank to the shaft.
Glue the top spinning part (clean with exacto) onto the hollow gear. Hold in place with tweezers or so.
When glue is dry, push rod into the assembly, glue to the bottom hole (with the UP, the hole actually goes through, but it's no big deal. I had to scrape the top part of the rod for a snug fit). There is a small gear but it's a bit too big and for this model the disc has sufficient friction.
At the end, assemble the wool holder.
If I would print it 1.5x it might even work, though it would require adjusting (play/gaps/gear teeth...)
At 1:1 I tried angling the gear teeth but it did not help much at that resolution.... I want a UV resin printer with high resolution :-(
I included a small gear for the top, but it's too big, but as mentioned before - It's not really necessary.
Yes, I know the real thing should have a higher gear ratio, but I wanted to keep it as small as possible.