Those are Jet clamps. I like them. The new version of Bessey’s parallel clamps look very good too but I’ve only checked them out in the store, I don’t own any.

I am familiar with the method used by your luthier friend and that is what I had in mind in the last paragraph of the post. I did not write about it because I have very little experience with it.

Rob

What clamps are those big red ones in the photo? Your method is similar to David Charlesworth’s, except that he has special support blocks that rest on the bench/glue-up table, independent of the clamping bars (on which you’ve placed the plywood pieces). The key aspect is to have the clamping force perpendicular to the surface, which is often problematic with clamping bars that curve under pressure. I suspect your clamps are those that maintain parallel. I need a bunch of those!

A friend of mine who is a great luthier uses a simple system for his backs and tops without clamps, just a flat board with a fixed fence on one edge and wedges against a parallel board that can be changed to accomodate the board’s width. It works over and over again perfectly, which makes me wonder about how much force is really required, given that you have carefully shot edges that almost want to go together in the first place after a few rubs back and forth with a thin glueline.

Best,

Tico

Haha!

In addition to the mess, I wonder about proper drying and joint strength with a clamp covering and squishing the glue line.

Thanks for the comments.

Rob

Seriously, though, thanks for the tip! I tend to work with thinner stock with the boxes I make. I can usually find thin boards wide enough that I don’t ever have to glue up panels, but I’ll keep your technique in mind for the occasion when I can’t.

(Now that I mention it to someone, I’m sure to need a glued-up panel in my next box.)

I like this method. I just got through doing some glue-ups for some drawer bottoms of ~7/16″ stock. I used a quick grip clamp at each joint to align them. However I like your method of adding the clamping blocks. That avoids the additional smearing of glue on the surface of the pieces by the clamps.

By the way, that exploding of the joint is a real annoyance…don’t ask me how I know this!

–Mark
The Craftsman’s Path