I use a printed side spool mount for my bambu p1p. But the spool got untangled and got stuck. The spool tangle controller seems to be a peerfect solution for me, but the inside hole had to be bigger to use it with the original bambu spool holder. So I modified only the nut part. (it's now 45mm in diameter). I didn't touch the rest of the dimensions. Same instructions as the original: 2x of the arms, and 1 of the front bars.