|Project by Jerry||posted 04-06-2014 08:57 PM||2631 views||9 times favorited||9 comments|
I used John Huffington’s method for modifying some ratcheting tie downs into band clamps, and then cut 8 pieces of half inch plywood to about 1.25×6”. I then attached velcro hook to each end of the cauls, spaced them so they would butt up against the box joint pins where they stand a little proud of the box, and attached loop velcro across the corner span. The reason for the velcro is that I found when I just used the cauls, the band clamps would pull them away from the corners as I tightened them down, so the velcro strap prevents this from happening.
I believe this method of clamping may be superior to the Rockler and other solid type box joint clamping cauls because they span the corner with a solid structure, and in my visualization of that process I believe that solidity may prevent the caul from compressing the box joint pins fully into the slots.
With these, the caul is free to move towards its opposite caul under the pressure of the band clamp without being hindered by a solid corner.
They ARE a little fidgety to get clamped up, but once they are positioned correctly and the pressure is on, they close the joint completely.
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