Clamping Beam

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Forum topic by bill1608 posted 06-20-2017 09:39 PM 1260 views 0 times favorited 4 replies Add to Favorites Watch
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15 posts in 1978 days

06-20-2017 09:39 PM

I made this clamping beam with an 8” x 8’ H-beam mounted on some old Oliver lathe legs. So handy. An H-beam, unlike an I-beam, is flat on top like a plate and fairly common, so works very well for clamping. In the photo, I drilled alignment holes for nails and then removed the nails 10 minutes later. Makes it easier to keep things aligned when clamping. I have other plans for the clamping beam, like a circle cutting router attachment.

4 replies so far

View fivecodys's profile


1640 posts in 2439 days

#1 posted 06-20-2017 10:12 PM

Very clever sir! That beam must weigh a ton!

-- A bad day woodworking is still better than a good day working.

View isotope's profile


177 posts in 2427 days

#2 posted 06-21-2017 12:19 PM

I think this is a great idea. Very clever. Well done.

View dday's profile


179 posts in 2233 days

#3 posted 06-21-2017 12:43 PM

And it can double as a battering ram when your daughter locks the bathroom door…. :)

That is one unique way to make sure a glue up is straight and flat.

View bill1608's profile


15 posts in 1978 days

#4 posted 06-21-2017 11:57 PM

The beam is 10” high and about 315 lbs. The legs are maybe another 100. I bought the beam at a supplier and was surprised at how flat and accurate it is. It is about 0.010” out of flat across the 8” width. Good enough for most woodworking purposes. My previous version was 6” x 6’ long and I put a thin epoxy later on top to make it perfectly flat. I might do the same with this one. I would grind it, but that doesn’t work, warps steel beams. Beams have good beam strength, but they are not torsionally stiff. I can tweak it with the leg levelers to remove any twist. The dolly under the beam can be rolled away after the levelers are lowered.

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