Giá đỡ cuộn thiếc hàn dạng đứng đơn giản

I solder daily and I tried various different solder spool holder/feeder designs out there and had the same problems with all the ones I tried:

- Solder getting tangled in the spool
- Weight distribution causing them to fall over when I tug on it for more solder
- Feeding the solder back onto the spool was clunky
- Only made for certain spool widths
- Lots of parts or requires screws/bearings/stuff that's not 3D printable
- Requires more work than ideal to refill with a new spool

So I decided to make one to solve these problems for myself and have an easier time with my daily soldering tasks. So far this spool works great, is easy to print, requires no extra parts, and is easy to refill and use with no tangling or flopping over. I hope it can be as useful for other people.

Let me know if you have any feedback on how I can improve it!