Precious Metal?
January 23rd, 2009Not on North River Drive
I had a wonderful adventure today. I wandered up by the Miami River and got me some metal for a bandsaw base. On a reader’s recommendation, I went to a place on 20th street. Man, do they have a lot of metal up there. Seems like every business in the neighborhood sells metal and/or buys scrap. There are giant piles of rusty ferrous stuff and aluminum all over the place. It’s not far from the general area where one would look for machine tools, so I may go back next week.
I got myself some angle iron. Shouldn’t they call it “angle steel”? Anyway, I got some. I got 64″ plus 40″ of 2″ by 1/8″, and I got 13″ of 2″ by 3/16″. I think. Total cost? Under $26.00. Home Depot cost? I don’t know. But let’s put it this way: MORE. If they had what I wanted. And they would not.
I’m planning to miter-cut this stuff and make a box about 32″ by 19″, and then I’m going to use the heavier piece to make four tabs which will serve as attachment for casters. I’m a little nervous, because I’m wondering if I have this right. If I miter the cuts, I’ll be doing a butt weld on each corner. I hope that will be strong enough. Maybe I could weld a piece of scrap across each butt weld on the bottom.
I’m also wondering if 1/8″ will be rigid enough. I figured it would be, because the steel on my mobile saw base is very thin, and it’s not even angled, and it works.
We’ll find out, I guess.
It didn’t occur to me until I had bought the metal that mitering might be a problem. I can put it in the dry-cut saw at an angle, no problem. But to get a 45-degree miter, I have to set it on its base, with one wall sticking up perpendicular to the saw blade. This is a no-no for dry-cut saws. You’re supposed to lay the angle iron down so the V-shape is upside-down. This makes it more stable as the saw cuts.
I suppose a jig is the answer. HA. More fun for me.
I almost don’t care if it works. If the metal is too flimsy or whatever, it will give me an excuse to get welding practice, and I didn’t pay much for the material.
More
Working with tools is full of surprises.
I was trying to figure out how to cut a 45-degree miter in angle iron, without situating the iron improperly in my dry cut saw. It turns out there is no reason to try. The correct way to weld a 90-degree turn in angle iron is to cope it.
I don’t have a picture, but it’s easy to describe. Hold two pieces of angle iron at 90 degrees, in the position they would be in if you made a joint. You can’t do it, because the bottom parts collide, and even if they didn’t, the end of the vertical part on one would butt up against the side of the vertical part of the other. So you remove the parts that get in the way; take out the redundant metal. Remove a square piece from the horizontal part of one piece, equal in width to the total width of the angle iron. Then trim the vertical part of the piece you took the square out of, so it will fit inside the angle of the other pieces. You only cut one of the pieces of angle iron. Weld and pray.
Oh, forget it. Here’s a Youtube:
