Early in my carpentry career, I pried off an old door casing and found thin, football-shaped splines inside the miters. The house was built in the 1920s, but the miters were still tight and flush. Years went by before I saw anything like it again. I was on a kitchen remodel job where the cabinetmaker used similar splines, which he called biscuits, to siteassemble an oversize pantry unit. He put glue and biscuits into a series of slots in the cabinet parts, and had the whole thing clamped together in no time. I asked the cabinetmaker what he used to make the slots, and he showed me a tool that looked like an angle grinder attached to
Tool Test: Plate Joiners
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