Made these using gallon sized food cans, concrete and steel bar. Drilled a hole in the ends of the steel bar and ran a bolt through to anchor I to the concrete. A single can filled with concrete can in to almost exactly 15lbs in a test run I did. Probably could get them to 35lbs even if I cared to throw some epoxy in the rim is I wanted but for now they do the job. A little unwieldy due to the sheer size of them. I think they are close to 2ft tall.

The real trick was you got to stick the pipe in one can, let the concrete cure, then figure out how to stick in the other can and keep it upright with a 15lb concrete can attached to it already. I built a rig to hold them upright as picture here.

https://files.catbox.moe/d9wi9v.jpg

It may not be apparent from the pic but I did make one rather big flaw with this rig… I drilled holes for the pipe to fit in… For dumbbells… Where each end was being closed off with a giant can… Getting the rig off the pipe was… Less than easy. lol

  • @Ottar
    link
    6
    edit-2
    1 year ago

    deleted by creator

    • @201dbergOP
      link
      32 years ago

      I’m going to work on some more that use 8 inch concrete form tubes so they will be a little wider but significantly shorter. Overall though only thing you could is is add chunks of metal into the concrete. Not much you can do about the density of concrete.

    • @201dbergOP
      link
      2
      edit-2
      2 years ago

      Well it was all stuff I already had around my barn so, nothing. But a bag of concrete and some galvanized steel pipe isn’t very expensive. 1lb cans of green beans is like 4 bucks a piece but considering I ate the green beans the cans are essentially free.