Sometimes on our archery practice the nocks jump from the arrow when hitting the target. I usually can't seem to find them nowhere, so i decided to design my on nocks to print them when i lose one. I've uploaded a Step file of the nock so you guys can change to adapt to your arrow sizes.I printed with the following Parameters in Makerware: 20%infill 0,2 Layer Height 2 shells Supports Option ON