Filament Splicing Fixture

This is a fixture to hold the ends of filament together in alignment when splicing. It is currently designed for 2.85mm filament, but is parameterized, so it could easily be modified for other diameters.
The channel that hold the filament is curved to match the curve of the filament as it comes off the reel. One side is curved at a smaller radius to match the curve of filament at the end of the reel, the other has a larger radius to match the start of a new reel.
I built this when I started a