I once saw the ultimate in Low-tech engraving balls. This was a
Russian engraver, from Siberia. He had a board mounted on a bench,
with a V-shaped cut-out, about a 90 degree angle. He used a Hockey
Puck, pressed into the V-slot. To hold the work in place (a flat
plate), he used small box nails driven along the sides of the metal
so that the heads held the work in place. Just rotate the Hockey puck
in the V-slot.
Now, a hockey puck may be hard to find in a place like Costa Rica,
but I'll bet that where ever you find winter snow, you can find one
easily. This may sound crude, but I tried it, and it worked
Quite an amazing tool, eh?
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