Reasonable point. I look like his table is pretty stiff and the clamping stock is big - but your point is well taken. It would be especially germane if he was gluing up with Titebond or some other sort of wood glue that requires significant pressure for a good bond. However, he is using urea-formaldehyde (two-part I presume), which is an adhesive that "cures" like epoxy and is an excellent gap filler. So all he really has to do is apply minimum pressure to keep the parts in alignment. Assuming he didn't crank down hard on the clamps, he is fine. That being said, I usually vacuum bag when I cap a block. Or if I am clamping, I will sandwich my project pinblock and cap between two other uncut pinblocks and clamp directly like you describe. Terry Farrell On Apr 7, 2010, at 8:32 AM, jimialeggio wrote: > I was thinking about your original glueup problem...I would bet that > a good part of what happened was caused by the way you clamped your > stock. > 1- did you clamp the multi-lam and delignit together without flat > cauls top and bottom > 2- looking at the clamp setup in your new glueup, the clamping cauls > reaching across that wide presumably flat table are exerting unequal > pressure, ie lots of pressure at the edges and considerably less in > the center. As well, the clamps reaching over that wide distance > will tend to deform (cup) the previously flat gluing table. The > clamp pressure above and below should be right on the piece not > offset. > > Just some thoughts..hope its helpful > > Jim I
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