Arrow Spinner (Straightness tester)

thingiverse

This is used when building your own arrows. Typically when using broadheads you want to choose the straightest shafts to use, or the straightest section of shaft. You can also use it to check the health of existing arrows. Crooked arrows are dangerous and unpredictable when shot... All parts are meant to be printed without support. It can be printed in any medium I use PLA or PET Print the cross bars (3 of them) flat on the bed with the holes for the nuts facing up. Print the other parts just as they are pictured. To assemble you will need: 4 bearings 22mm diameter with 8mm shaft by 7mm thick (8mm x 22mm x 7mm) 4 M4x15 screws with nut - you can use longer but not shorter 6 M4x20 screws with nut - you can use longer but not shorter