Way before G5 came out with their arrow squaring device, I made my own. I took 2 blocks of a 2x4 approx. 4 inches long, drilled a hole in both, the next size larger than the outside diameter of my arrow, 2315’s I believe. I then screwed the blocks together essentially making a 4X4 block. I put a piece of 220 sandpaper on a piece of glass, put the arrow in the hole and rotated it like a hand drill. I would do the arrow, glue in the insert and then square the insert. When your trying to make a old muzzy 3 blade fly right out of a double cam bow....a fellow will go to extremes I reckon...but my junk was right...flew like darts.