"Bob La Londe" wrote in message
news
https://www.youtube.com/watch?time_c...&v=f2xlAWytx9g

I know some folks may not be a fan, but I noticed he made his main
uprights out of 1/4" steel plate welded up into a box.

I just made a deal on a small quantity of 4x8x1/4 A36 plate for
about half local metal yard retail. I'm going to use one piece as
the top for my welding table until I run across a good deal on
something thicker. I decided to buy some extra just because the
price was good enough to be worth sitting on it for a while.

I've been want a little better hydraulic press for a while. I have
pulled my 12 ton partially apart. I can still use it, but only
above the torn metal. LOL. My 20 ton now has a bow on the top
beam. That's what happens when you try to press a prop hub out in
the wrong direction.

Anyway, I was wondering if 1/4 plate really was adequate for the
uprights on something like that. I have no need to make one as tall
as stretch built his in the video. I won't have a joint in the
pieces like he does, and I wasn't planning on going 50 ton. I've
got a pretty beefy 30 ton cylinder and power unit off of a log
splitter I was thinking about using for the hydraulic part. My 20
ton has been adequate for anything I needed to press except for the
fact that I managed to bend it. I've also got some heavier stock
for things like the top and table.

Ok, tell me how stupid the idea of using 1/4 plate and making my own
upright tube is.

If you can match the frame members to this table you can calculate the
tension and bending stresses, then give your modifications a larger
margin.
https://www.engineersedge.com/standa...properties.htm

-jsw