Tronxy X1 Horizontal Spool Stand on Original Handle

For those who need a horizontal spool holder that snaps on easily on top of the original Tronxy X1 handle without having to remove the handle. The is a remix from https://www.thingiverse.com/thing:508896. The main thing I did was to design a cap piece that snaps onto the original handle at the top. I gave a bit more tolerance so that removal is easier, but the stand is quite stable and works well. I also adapted the spool holder base from thing:508896 by adding a pair of hex-nut recesses, and a