I made 1 decent cut in 6" hole pattern for 1/2" plywood. noticed marks on the bit so instead of doing the following I took a piece of wood, pushed it just a little over the edge and 2 inches from the notch half the bit was gone.
Ultimate Guide to KOWOOD Router Pieces for Woodwork Beginners
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Olson 80 Inch Blade FB14580DB-025
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πͺ DEWALT DW3984C Portable Blade Set of 3-Pack