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Thorlabs price per square inch for the diamond is about $0.23/sq inch, which is the best price I have found so far.

You can also Try PSIdragon for diamond. ~$32 for a 9x11 sheet, which is...

Rather, check out Thorlabs, Inc. - Your Source for Fiber Optics, Laser Diodes, Optical Instrumentation and Polarization Measurement & Control

Search for lapping film. The alum oxide is a good...

I had a less than satisfactory dealing with them in the past. I ordered sone sheets, They had one in stock, the rest backordered. They shipped me the one, charging me full shipping (for a single...

I just had a shave off a razor honed to 0.1um, it was nice!