Bobbin holder for fly tying

I made some small changes to the original design (https://www.thingiverse.com/thing:5166530) in order to fit a ball pump needle. Usually you can find those spare needles in your local sport shop.
It is a very tight fit for the needle thread, but screwing in was working fine. After screwing in the needle I heated it up with a lighter in order to "melt" the PLA around the thread.


If you want to remix my design, you can find the OpenScad sources here (https://gitlab.com/deimi/hardware-tools/-/tree/main/fishing/bobbin-holder). I cannot upload them to thingiverse, as the file includes the original stl file.

Edit:
Added a shorter version where the head is not longer then the thread of the pump needle, which makes it easier to insert the yarn into the needle.