I was toying with the idea of making two opposing channel cuts going halfway through on either side of a stone, which would create a void at their intersection.
Looking for negative space
Where we ended up in terms of basic form, though there are still some finishing touches planned, so still a work-in-progress.
I started by slicing opposing channels on opposite sides of an apple to verify that the remaining material could hold its shape.
The stone came from our project to expand the wading pool of the quarry. About a hundred pieces of rock were extracted, some at night.
I split the stone in half, planning to make a matched set, but the left side cracked when I tried to remove the first channel. #F-Bombs
Two opposing channels are cut, revealing the void. Using oblique angles rather than orthogonal cuts to get a diamond void.
The raw side opposite my split face is very rough, with large-bore holes from the original quarry operation to free it from bedrock.
Checking to see that the piece will stand on its base, but feels too top-heavy. Next step: remove material to create new planes.
Trimming the top planes with water-fed gas-powered 14" cut-off saw. Makes a lovely mess!
Using angle-grinder with flush-cut diamond blade to even out rough cuts made by the big saw. Water trickle helps cool the blade.
Continuing to refine the various planes with a diamond grinding cup.
It's hard to get a sense of the form from any given angle as there are so many facets.
The extremely rough raw side will be left as is as a nod to the stone cutters who raised this piece from bedrock a century ago.