Plumbing part grips clamps for easy gluing
Plastic holders for 3⁄4 " plastic plumbing pipe, such as the ones shown right, provide an inexpensive, effective solution. Steel 3⁄4 " pipe snaps right in, and the holder has enough grip to keep the clamp from tipping over when you lay your glued-up stock in place. Mount the holders on two 3⁄4 x1" strips, spaced to meet your needs, and then attach the strips to a piece of plywood to make a portable clamping table. Available from hardware stores, homecenters, and plumbing shops, the pipe holders ordinarily cost about 15 cents apiece.
—H. Dick Reynolds, Jr., Mediapolis, Iowa