Here’s an application I never suspected when I purchased a plate joiner. I was confronted with a squeaky 2×6 tongue-and-groove floor laid atop 4×6 beams on 4-ft. centers. The floor had squeaked for over 20 years, and the substantial spans between the beams didn’t offer much anchorage for more fasteners.
After considering my options, I made about 300 slots with my plate joiner on 6-in. centers at the intersections of the boards. As shown in the drawing, I then inserted #10 biscuits, liberally basted with yellow glue, into each slot.
Once the glue cured, I used a chisel to lop off the tops of the biscuits, and a belt sander to bring them flush with the flooring. The floor, which was then covered with carpeting, is now completely squeak-free.
L.E. Lindstrom, Alhambra, CA