Help me identify a part please?

I want to build my wife a drafting table. I really like the style of vintage drafting tables which use this round flat disc as a tilting mechanism, either by having incremental holes drilled in it for pegs, or having a knob-tightened clamp putting pressure on it. Pics included are what I'm talking about Problem is, I can't for the life of me figure out the name of that round metal part, or more importantly, where to buy one. Actually, I have found many names for it, but none of them are of any use to me, because when I google these names in search of a supplier, the results are anything BUT what I'm looking for. Names I've tried: tilt arm slider rail bracket track U-bracket circle iron lid support circular brace These terms were either wrong or perhaps not specific enough to lead me to the actual part. Help?

Topic by Enormous Earl   |  last reply


i need help on a way to secure plywood for laying on over the bathtub, the far side has only 1/4" curved and tile wall

I need to do a medical procedure and I want to get it out of my bedroom. I salvaged some 3/4 inch plywood  and need to find a way to securely attach the plywood temporarily  for the procedure and then be able to quickly take apart and store for 2 days latter I realized that working with the smaller plywood pieces was better for my spine. Once I do a couple of procedures I will see if I need to attach them together with  a quick release hinge or plate.  I need to lie down and need to be able to work the water controls ,so I will leave a space open by the controls and spigot . I can put a pillow there if I need to. I also found  out by accident that the home depot orange buckets are almost  the perfect size for use as stabilizer columns, with lids or a shim underneath and filled with water, they would make great  stable columns. So that really helps. The problem I need help with, is every time I think I found the answer a day later I realize it wont work. I am not a carpenter. I need to secure the plywood on the far side of the bath tub so I don’t have a flip over or collapse into tub. The far wall has ¼  inch of  curved bathtub and then the  tile wall. I  think I need to make a wedge device to  keep the board into the tiles and not let them shift or back out. The buckets maybe enough, but I have to move  my body a lot during the procedure  and don't want to take chances.  2 of the boards have 4 inches overhang on the bathtubs entry side, The lip for the bathtub in that side is I think 4 or 6 inches wide so plenty of support for the plywood. I have 4 inches  extra overhang , I could cut  that off . Or  if it would be better attach some quick release wood  for legs or even 2 inch PVC pipe if I could figure out an  attachment with quick release.    I was thinking of attaching a board perpendicular to the plywood to fit in the tub and keeping the plywood from shifting, and  maybe a wooden wedge  and notch system to push the board against the wall and keep it from backing out or shifting. I just had a brainstorm , put wooden perpendicular strips on both sides of the plywood . If exact and with the pails it maybe non shifting. Someone would have to help me with how to measure correctly, as my measuring  skills are horrible. I may have a tool that would carry the measurement over.  I did get a book on my new kindle that is all  about measurement tricks, but I have not had time to even load it up

Topic by escapefromyonkers   |  last reply