Originally Posted by
Double0757
Hi there! I have the 400 Atoma and the 1200 as well as a DMT325 (well worn). For dressing, I would prefer to use the well worn DMT on my finishers (Shapton glass 16k and the other naturals) before I use the 400 Atoma. I believe the Atoma 1200 or the DMT325, dress the surface better on the 8k level and up, than the Atoma 400 does. But to be honest I have only tried the Atoma 400 up to the 8k Shapton glass only (to dress the surface) and I don't remember being any different on the final edge. But the lapping I have done on the turi, for example, with the 400 Atoma doesn't leave as smooth a surface as the Atoma 1200 does.
Somebody will have to comment on the 600. I think it could work, but I don't have one! The 400 is a stone eater, making all initial lapping a breeze that produce an even "smooth" flat surface. The 1200 shines in lapping already lapped surfaces or refreshing and dressing a stone for honing, specially finishers (8k and up).
If you want, you could use a new DMT325 for your initial 1k to 12k or 16 k lapping, follow by the Atoma 1200 to lap and dress stones from 4k up. I wouldn't use the Atoma 1200 for 1k lapping, IMO. Hope this helps! Double O