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I am impatient. I like the saw to cut fast and efficiently, I want the trim saw to cut quick and accurately and I want to be able to grind off material that need to be removed pronto! When I have a slab that still needs a significant edge massaged, I generally do not use the silicon carbide wheel grinder or the flat lap. Instead, I am using a simple grinder designed to remove a lot of material quickly.
Grinding wheels are slow and it is hard to make a flat edge.
A flat lap works, but is slow if you have more that an 1/8 of an inch to grid away.
A trim saw can be used to remove edge, but the spray of water can hide the line you are working toward.
For this reason I made a dry grinder. This is a direct drive motor with an arbor. The blade is a wet/dry that has ample grit on the edges of the blade. This allows one to use it as a flat surface to grind against. I use a vacuum to remove dust as you should not breathe in any of this for fear of silicosis. I can grind a rock slab so that it is right on the line and can watch the process close up.
Underneath I run a vacuum line. The slits on the flat grate surrounding the blade allows the dust to be sucked out.
The motor is a 1/3 horse 1750 rpm type. Mine is built into a box and gets too warm after continued use. I need to add a fan to circulate the air!
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