Snapmaker U1 Spool Holder

Update: Version with Ball Bearings for Smooth Operation can be found here: https://makerworld.com/en/models/2121712-snapmaker-u1-spool-holder-w-bearings I was looking for a improved spool holder for the U1, and originally had found the Snapmaker U1 Spool Holder 44 - 83MM Fits any spool, however there were multiple issues for my own use case that I wanted to address. I have redesigned this from scratch instead of just modifying the original model. This model has inspired me to make my own. Threads that run the full spool length to accommodate thinner spools such as 250g spools. The original part has an un-threaded length of approximately 61mm, while I need to be able to attach and secure spools as thin as 34mm.Use of a M3 screw instead of a sheet metal screw. I don't keep sheet metal screws around but I do have tons of m3 screws.No need for a hex tool that can be misplaced.Spool is held with shallow cones on each side, instead of just one side.Use of trapezoidal threads that are eas