Review on AUTO TOOLHOME Self-Centering Doweling Jig with Step Drill Guide Bushings Set - Simplified Wood Dowel Jig for Efficient Woodworking Joint Creation by Mark Gardner

This product is aimed more at carpenters who do not need ultra high precision. Not be. The ends are tight, but I noticed right away on the first try that the black center piece tends to bulge slightly where you drill the holes. It is enough to create a slight distortion. To me that is totally unacceptable. Once you've tightened it as tight as you can, grab the middle insert and wiggle it around. He moves. I understand why, but I also understand that no doubt the developers could have easily prevented this with a little more ingenuity. I could do some tweaking to prevent this, but I don't expect to have to do this with a new product. I promise, and I say this because of the way it was built, this was not an isolated case. This is a design flaw on all of them.