After marking and installing biscuit joints in several boards that I've glued up edge-to-edge, I then plane the glue-up to thickness and rip it to finished width.

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After marking and installing biscuit joints in several boards that I've glued up edge-to-edge, I then plane the glue-up to thickness and rip it to finished width. The problem is that in the process, I also remove the marks that show where the biscuits are located. Later, when crosscutting the glue-up to length, I sometimes cut through one of the biscuits—and that leaves me with a very unattractive edge.

One day, while gluing up some long pieces of oak, I grabbed my electronic stud finder and ran it along the seam. To my surprise, it located every biscuit in the boards. Now, I never have to guess!
—Dick Diedrich, North Lake, Wis.