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Posted by John Kerstetter on May 24, 2001 02:58:58 UTC


I'm fine grinding a 12.5 f5 with 30 Micron grit. Got through 2 wets, set the tool next to the mirror and "ding!". The tool hit the mirror, and took a HUGE CHUNK out of the tool. No damage to the mirror.

The missing peice is about 1 inch wide from the outside of the tool, towards the middle, and about 2 inches long, along the outside edge of the tool. Part of the beveled edge is on the chip, and even though I've not measure yet, it appears as though the chip goes about .25" deep.

What can I do? Can I still use the tool with the chip? Do I need to make a new tool, and if so, How in the world do I get it to the same speherical dimensions that the present tool is now, so I do not wind up with a "funky" mirror?

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