First thoughts on the Atoma after grinding some VG-10 (Spyderco Street Bowie) and the 154CM on the Pro Tech:
This thing is really aggressive, especially when you consider the low pressure used. I wouldn’t want to actually apex the knife with this, you’d burn up a lot of steel. It looks like it would be a good idea to get the 400 and/or 600 to do regular maintenance on an existing edge bevel, the 140 is just too much unless you’re changing angles.