[brianwilson50]

Hi Mile1,

You are right, you do not need more than 1 or 2 grits to remove the lippage on marble, in fact, with a WerkMaster, we have never needed to go beyond 1 grit for lippage removal, whether it is on marble, granite, or other natural stone products.

We use two or three steel grits dry because the advantage is that : 1) Dry allows us to see where the picture framing is as we grind, so we are not grinding wet, vacuuming up the slurry, then washing the floor then waiting for it to dry, then go -"oh D#$m" got to start again. How often does that happen to you? How much time does it take?

2) The first three grits typically remove the most material, so although you do require a vacuum, which can be expensive, you have removed the most material without all the heavy slurry which can be a problem to dispose of. The labour saving and time saving more than justifies the cost of a vacuum.

3) It is actually faster to grind dry on the first three grits because you have a better visual of the tool marks, easier to see if you have removed them.

When we have compared grinding with our machine dry compared to wet, we have achieved more than a 50% Rate of Removal improvement dry. We can grind and polish up to 1000 sq. ft of marble to 3000 grit in 7 hours, faster with our bigger machines, 8 hours for Absolute Black Granite. That includes removing lippage and edging.

Compared to all the other machines, I think you can agree that the performance of the WerkMaster with it's patent pending Octi-Disc Technology is a significant improvement over todays planetary designed machines.

Cheers...

Brian