It seemed like a good idea to build a semiconductor lapping machine from an old hard drive. But there’s just something a little off about [electronupdate]’s build, and we think the Hackaday community ...

The true test of the amateur astronomer is building their own telescope. Grinding and polishing your own mirrors is a long, arduous process. Instead of lapping the blank by hand, Laurie Hall built ...

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Cutter grinding wheel performance depends on truing and dressing. Off-line truing and dressing systems keep cutter-grinding wheel packs working. A CUTTING TOOL is only as accurate as the grinding ...