Creality CR-10 Spool Adapter - Large and Small

thingiverse

I didn't meet my requirements with the available CR-10 spool adapters, so I created a few of my own designs. Two sizes are available: 70mm in diameter and 90mm in diameter. The 90mm diameter size works perfectly for Tiny Machines' filament, which has an unusually large inner diameter. I have optimized the pitch of the threads to ensure they print smoothly without needing support, and I've made them coarse enough that the "bolt" and "nut" thread together with fewer twists. As for any sort of play or "slop" in the threads, I iterated several times to find a fit that is both easy to thread and provides a firm connection at the same time. The tolerance of the nut and bolt is 0.3mm, so depending on your printer, you may need to scale up the *NUT* by 1-2% to suit your needs. Don't scale down the bolt, as it could cause the inner diameter to become too small and won't fit on the control box spool holder.