I was told there is a method for checking to see if your inserts or broadheads are on straight. You roll your arrows on an arrow roller to see if they "wobble". What is this called and how is this done?

I think it's a must to spin test your broadheads. There are several arrow spinners on the market but I just make my own . First I get a board about 18 inches long and make two cuts crossways about a 1/4 inch deep on my table saw near each end. Then I put two washers in each cut so that it forms a "v". Place your arrow on the washers and spin the arrow with your hand. You should place a box at the tip of the broadhead with a dot on the box so that the dot and broadhead are in the same place. If its out of line the tip of the broadhead will not stay in line with the dot as you spin it around. Hope this helps.

Okay, I do understand that it's critical to spin test BH's, but what do you doesn't spin true? What if the BH wobbles but a field point does not wobble? Can they be staightened or should you not hunt with them?

Tx if you are using aluminum arrows that you have glued with hot melt you can heat up the insert and rotate it and see if the broadhead will spin more true. If you are shooting carbons and epoxy your insert, then those that wont spin become target arrows. The best spinners are my hunting arrows.