Benchtop Hold-Downs Offer Flexible Clamping
Unable to clamp together complex assemblies? No problem! Using one reader's benchtop clamping system you'll have no trouble mounting pipes in the flanges.
I needed to clamp together a complex assembly with pieces arranged at a couple of different levels. But my standard clamps lacked the reach and versatility that I needed, so I came up with a benchtop clamping system that adjusts to most any project.
I based the system on Pony #56 Pipe Clamps, which have the release clutch and clamping screw both located in the head assembly. I began by drilling 1 1/16" holes through my benchtop and then mounting pipe flanges on the underside of the bench.
Now, I can mount 3/4" pipes of various lengths in the flanges, then slide one or more Pony #56 clamps onto the pipes. To hold a piece above the benchtop, I flip the bottom clamp upside down, then clamp the workpiece between the two opposing clamps.
The flange threads are tapered, so you can screw a threaded pipe end into the flared end of the flange only. You need to position the flange with the flared end facing upward, and add a 3/4"-thick wooden ?doughnut.? Also, when mounting the flange, install a piece of pipe in it for proper alignment.
When I'm not using the clamps, I drop short pieces of 3/4" schedule 40 PVC into the holes. They sit on top of the flanges, flush with the benchtop, and give me a plastic-reinforced hole that fits a 3/4"- diameter bench dog.
- Aaron Butler, Danville, Pa.
For more in-depth information on gluing and clamping, visit our Gluing and Clamping section in the WOOD Store.
Add your comment
Please confirm your comment by answering the question below and clicking "Submit Comment."