Reply by dbhost

  • Advertise with us

Posted on How Much Pressure Is TOO Much?

View dbhost's profile


5767 posts in 3469 days

#1 posted 06-14-2012 06:12 PM

I have both Jorgensons, and HF clamps. Both will let me dent hardwoods during glue ups if I try my gorilla impression with them… I am still stunned at the guys that claim the HF clamps won’t hold enough clamping force. I think they are trying to accomplish a wood to wood bond by driving the fibers together with clamping force…

I may be wrong, but I honestly think if you are applying enough pressure with the clamp to cause the clamp to flex, you are doing something very wrong…

I think on the question of how much it too much or not enough, I was taught by the late Dee Smith (my Jr. High wood shop teacher), that you wanted just enough pressure, applied evenly, to get a slight bit of squeeze out. If you are denting the wood, chances are excellent you have forced all the glue out of the joint. He demonstrated that gluing together a couple of scraps of 2×4, one set hamfisted, the other with just enough pressure to barely squeeze out. This was back in the day I think the only wood glue I had heard of was Elmers Wood Glue… The following day’s class he showed how slight a pressure with a screwdriver popped apart the hamfisted joint, but he couldn’t get the light squeeze out joint apart with a chisel and mallet… That lesson has stuck with me all these (mind your own business on the # of) years…

I am sure that there is an engineer on this board somewhere that can chime in with #s, and let me stand aside while that happens… Engineers and their numbers bore me to tears. Nothing personal, I just work with them and see them always take the long way around a simple problem…

-- Please like and subscribe to my YouTube Channel

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics