I love making different types of joints for my projects. I'd always wanted to use half blind dovetails on drawers, saw the 4212 did that and a lot more. It was delivered (free) in 2 or 3 days after ordering, It took a couple hours to read the instructions, set it up and start cutting. I'm just a weekender that likes to make sawdust, but the 4212 was just what I needed. One minor problem is availability of replacement dovetail bits. I'm sure when this jig gets a little more widespread, the bits will too. Great tool, I'll give it 5 stars when bits are more available.