Just got mine yesterday. It actually can lap a jnat without getting stuck! Very fast and smooth. Broke it in on angle iron for a few minutes, good rinse and lapped a few tonight. My dmt 1200 kind of slid around and got stuck, even with light pressure under running water. This one slid very nicely. I got the 400 2 weeks ago. Took a junker blade to it and it looked like a bomb went off on the steel. Im not going to attempt the 1200 for steel although Im sure some of you have tried it.