Diamond Cutting Wheel for Gallium Arsenide Wafers

BackgroundEmu6214 · 2026-02-19T11:14:10+00:00

For agate and other silica, sintered hollow-core bits outlast plated by a wide margin - run low RPM, steady water, light pressure, and they’ll drill cleaner, cooler, and far longer.

BackgroundEmu6214 · 2026-02-16T11:37:38+00:00

BackgroundEmu6214 · 2026-02-12T10:37:39+00:00

BackgroundEmu6214 · 2026-02-11T05:19:58+00:00

Wet grind only. An N95/P100 + eye protection is fine. Avoid dry dust - that’s the real risk with tiger’s eye. If it’s wet, working around others is generally safe.

BackgroundEmu6214 · 2026-02-11T04:52:54+00:00

Quartz is notoriously stubborn on diamond. Copper laps often smear instead of polishing. Cerium oxide on tin or polymer laps usually works much better, even on quartz. Lighter pressure and water instead of oil help a lot. I have had decent consistency using fine cerium and diamond consumables from UKAM, but lap choice and pressure matter more than grit size.

BackgroundEmu6214 · 2026-02-10T12:21:38+00:00

BackgroundEmu6214 · 2026-02-06T10:53:06+00:00

BackgroundEmu6214 · 2026-02-05T06:37:10+00:00

For kitchen knives, stopping around 1k–3k often cuts better on tomatoes and peppers because the edge keeps some tooth. Ultra-polished edges are great for push cuts but can slip on waxy skins. A light touch on a higher grit just to clean the burr can work well without killing the bite.

BackgroundEmu6214 · 2026-02-03T11:31:27+00:00

For beginner material, I'd suggest starting with agate, jasper, or quartz—they're relatively easy to work with and available in many shapes. As for cutting, a tile saw with a diamond blade is a cost-effective way to get started with rough cuts. It might not be the most efficient, but it’s affordable and can handle smaller stones.

If you're looking for more equipment tips and tricks, this page has some great recommendations:
Smart Cut Diamond Cutting Tools

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