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I am gluing up my workbench today and need some help. Demensions are 30X60 and it is made up of 15 2×4's standing on end.

My first question is how tight should my clamps be I have 7 36 inch jorgensens bar clamps. Should I keep tightening till I can't see any light through the cracks?

Also how much glue will I be needing? Or should I look for a certain amount of glue to be compressed out when tightening and stop at a certain point?
 

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Do you mean standing on edge? Jorgensen makes several types of bar clamps, the pony's are pretty light duty for clamping a bench top. The I-bar clamps are much better and can deliver a lot more pressure. I would apply as much pressure as you physically can whichever clamps you have. For gluing a benchtop I would get a gallon of glue. You won't need it all but it is better than running out. I also would not try to glue all 15 pieces at once. That would be a nightmare. Start out by gluing 3 to see how it goes, then maybe graduate to 4 or 5. Glue 3- 5 at a time then glue the sections together to get the full width.

You realize that 15 2×4's will not give you a 30" wide bench, it will be 22 1/2".
 

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+1 on the 15 2×4s equal 22 1/2" wide instead of 30".

A very important point, and one I haven't seen mentioned here, is to be absolutely sure the boards are all square and level and not in a twist when you glue them. You need to do a dry fitup to check this. Once the glue is in there you will just barely have enough time to put it all together and get it clamped before it won't move anymore.

Doing this in two or three steps is better. But, with no preparation of the surfaces you might wind up with a couple of 12" wide sections that don't mate and clamps will not be able to draw together.

Go to www.woodgears.ca and watch how Mathias glues stuff. Good instructions there.
 

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glue sqeeze out is what your looking for.place a piece of wood beteewn the clamp and the wood your gluing or you'll get dents where the clamps were.also say 3 clamps under and 2-4 above or whatever number you need point is clamp from top and bottom, and if you try to do a good job it can be a fine bench forever.nothing wrong with a glued up 2×4 bench top.
 
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