Angled washers. You ask, you get. I have had the privilege to work on many different things over the years. And a kean eye for strange and new things to me. Can't remember people's names if you put a gun to my head. But all things weird and sundry are not a problem.
Or you could simply take a piece of available rod or square stock and cut the appropriate angle after you have drilled a hole.
Concrete bending. I posted this quite a few times:
GFRC - Post Tension Cantilever Glass Fiber Reinforced Concrete
Pay attention to the dimensions of the concrete. A bit cheezy, but still kind of interesting.
External post tensioned GFRC test - Glass Fiber Reinforeced Concrete
You sure can bend concrete. And you don't have to believe me, it's plain for you to watch with your own eyes.
Your channel iron is 1 1/2"?
That would be large enough to pass a 5/8" all thread and have a nut firmly sitting on the flat.
A few notes on the concrete videos. The mix used is measured by weight. But is a rough 50/50 sand portland cement mix. No aggregate.
What strikes me as the most interesting part is the actual cross sections that are doing the support. Not very thick at all. The bent coffee table that gets a tension rod is only 3/4" (18mm) thick. He uses Glass fiber reinforcement.
I did a bunch of digging on the internet about chopped up soft drink bottles having a useful effect on concrete.
Here are a few links:
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Posted by: mwmkravchenko@gmail.com
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We have a sister site for files and pictures dedicated to concrete machine framed machine tools. You will find a great deal of information about concrete based machines and the inventor of the concrete frame lathe, Lucian Ingraham Yeomans. Go to http://groups.yahoo.com/group/Multimachine-Concrete-Machine-Tools/
Also visit the Joseph V. Romig group for even more concrete tool construction, shop notes, stories, and wisdom from the early 20th Century.
http://tech.groups.yahoo.com/group/romig_designs/
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We have a sister site for files and pictures dedicated to concrete machine framed machine tools. You will find a great deal of information about concrete based machines and the inventor of the concrete frame lathe, Lucian Ingraham Yeomans. Go to http://groups.yahoo.com/group/Multimachine-Concrete-Machine-Tools/
Also visit the Joseph V. Romig group for even more concrete tool construction, shop notes, stories, and wisdom from the early 20th Century.
http://tech.groups.yahoo.com/group/romig_designs/
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