Pro tip: I see so many people skip the test clamp on a mitered face frame joint, which is why they get that tiny gap after the glue dries.

I always dry-fit and clamp the whole frame for at least an hour before glue-up, because the pressure from the clamps can pull the miter slightly out of square, and you need to see that happen before the glue is on.

3 comments

3 Comments

emma68416d ago

Totally get that clamp pull issue, @quinn377. I've had that exact same thing happen where you think you've got a perfect fit, then the clamp tension just shifts everything. One thing that really helped me is not just dry clamping, but marking the joint with a little pencil line right at the corner before I take the clamps off. That way, when I glue up, I can line the miters back up exactly where they sat during the dry run. Also, I started using a small scrap block of wood between the clamp pad and the workpiece to spread the pressure more evenly, which seemed to stop that weird twisting. Just a couple of little tricks that saved me from that "why is there a gap NOW" frustration.

quinn3772mo ago

Wait, you do a full hour dry clamp? That's smart... I only ever did like ten minutes. Learned the hard way last year on a picture frame project. Had everything perfect, glued it, and then saw this hairline gap just... appear as the clamps tightened. Spent more time fixing it with filler than building the thing. Now I always check for that clamp pull.

sean_ramirez2mo ago

Man, @quinn377, that dry clamp lesson hits home lol. I once built a little bookshelf and was so proud of the fit. Slapped the glue on, cranked the clamps, and watched the whole side bow out like a banana. Ended up with a gap you could fit a pencil through. Had to rip the whole thing apart and start over, which felt like a personal attack from the wood gods. Now I'm paranoid and do a full dry run every single time, checking from every angle like I'm looking for spies.