Coops Spine Tester: I LIKE it!
6:12
Bearpaw Arrow Analyzer overview / review, arrow spine tester
9:42
Coop's Bowsmith Spine Tester (And How to Use It)
3:10
Coop's spine tester
19:27
Bend Test - Still Easier Than Nock Tuning
25:50
Making a historical crossbow - with the HIGHEST arrow speed?
14:36
Coop's Bowsmith Shooting Machine
12:18
making a new spine tester
9:37