Make Beautiful Log Furniture with Tenon Cutters! Tenon Cutters are the log furniture tools that cut tenons on the end of your log rails and spindles. We carry LumberJack Tools Industrial and Pro Series Tenon Cutters, Northwest Tenon Cutters, and the EZ Tenon Cutter. Use Tenon Cutter Countersinks to cut the funnel shaped impression into the log post after drilling with a Self-Feed Bit, to accept the taper of the log rail. This provides a tighter fit on log furniture and gives a stronger shoulder fit on log rails.