Todays Project - What did you do today?

[f350ca]

By request, it has a metal element, they're full of rebar and wire mesh and I did build the grinder.



I used marble chips from a nearby mine for the aggregate in the surface coat. Its white portland dyed black. The core is regular portland with gravel and fiberglass chop with water reducer to minimize shrinkage and the resulting cracks.


Built this for the rough grind. Used a 7 inch diamond grinding wheel, takes all that 2 hp motor will do to spin it.



The piece on the right is ground, from there I used a wet polisher with diamond pads, started at 80 grit and went to 3000.



And the finished product, sealed then polished with with Carnuba wax. Needs a coat of wax every year or two.