Like Chris said, there is nothing wrong with a DMTC for lapping. And like Kap Zero said HAD is a helluva affliction So I have both the DMTC and the GDLP. It reminds me of one of those motorcycles that is built for both road and dirt. It will do both but not as good as a dedicated sure enough road bike or dirt bike. The DMT is made for sharpening. It works for lapping and if you don't mind the stiction it will get the job done but the GDLP is to lapping like a Husquvarna is to riding dirt. It is made for it and does a superior job IMO.