I think we're all wrong about pocket hole jigs for face frames

Last month, I was putting together a maple face frame for a kitchen in Portland. I used my pocket hole jig like I always do, set it for 3/4 inch material, and clamped it down. I came back the next morning and the whole thing had pulled apart at the joint. The glue held, but the pocket hole screws just let go. I've heard for years that it's the best way, but that failure cost me a day of work and about $50 in maple. I had to redo the whole frame with mortise and tenon joints, which took longer but felt solid. I'm starting to think we rely on those jigs too much for things that need to last. Has anyone else had a pocket hole joint fail on a face frame after the glue dried?

3 comments

3 Comments

reese_fisher1mo ago

My maple face frame for a built-in bookcase did the same thing last year... the screws just seemed to lose their bite overnight. I switched to using a bead of wood glue in the joint along with the pocket screws, but I also don't tighten them all the way until the glue gets tacky. Letting the glue set a bit first seems to stop that pulling action. It adds maybe twenty minutes to the process, but I haven't had a failure since.

sanchez.mary1mo ago

Yeah I read somewhere that pocket screws can actually push the joint apart as the glue dries, like it creates a tiny gap. The wood might be moving a little overnight too, especially with maple since it's so hard. I mean, maybe the screw threads just don't hold as well in some hardwoods compared to pine or something softer. It's weird because everyone acts like pocket holes are foolproof, but I guess nothing really is.

wright.luna17d ago

Wait, so the screws just lost their bite overnight? That's wild. @reese_fisher, when you let the glue get tacky first, do you still use the clamp or just hold it by hand?