I understand bowling balls can make great vise mounts when set into something (like a sandbag of lead or sand). About the time I read that I happened to find a bowling ball in my alley right outside my gate. This was surprising as I can't imagine Puerto Ricans bowling. I said to myself that I could always use something like that for the mass and material. I left it there and latere realized I should have taken it in. Even for non-engraving work it's a good vise mount. I'll have to find one at a resale shop somewhere.
