I bought this jig to replace a homemade jig that I have been using. Out of the box the tool looked to be top quality. During assembly and setup I encoutered a couple of problems. First, during conversion to a left tilting arbor I found that the metric "Button Head Screws" that attach the miter guide to the base were made of soft inferior quality metal. I had to cut the screws out and replace with quality screws. Second, the rear adjustment for eliminating side-to-side play (slop) in the miter guide would not eliminate the side to side movement in the miter guide. This adjustment device also had to abe replaced. On the bright side, the jig works beautifully for cutting accurate tenons.Bobby ParrisEngineer turned Woodworker