Hi Damian! My wife and I do cat rescue and the Zoom-O disc launcher is one of the kitties' (we call them our "Littles") favorite toys. We were having a heck of a time finding the refills online...then I stumbled across your STL. It only takes 30 minutes to print 9 of these on my Anycubic Kobra 2 Pro at 100% infill. They fly perfectly and our "Littles" wanted me to send a big thank you your way! I really appreciate you taking the time to design and share these with us! 🐾🧡