#1
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Cutting box in half
I was thinking about cutting 4 feet of 2x2x1/8 box in half. Wondering about potential stresses in the box though. Would I end up with two bananas? Ideally I'd use the plasma but would I have less risk of distortion if I used a skinny disc in the grinder? |
#2
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Expect the result would be similar regardless of the method of cutting, if there is residual stress. A zip disk would give a cleaner result though.
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#3
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John, I've had the same problem and became cowardly and did not try it.
If you are moving fast enough, as you should cut 1/8 at about 90 inches a minute, the heat is negligible. You can pick it up and handle it immediately after. I'm not sure that a zip disk will put less heat into the work But if you have a shop with a press brake near you, they can bend this channel out of 1/8" or 1/16" easily. And it will be straight
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Gerry You got freedom of speech, if you don't say too much. Aaron Neville. When a liberal screams racism, you can bet they were also born with white skin. Common sense is like deodorant. The people that need it most never use it. Joe Concha Last edited by Ironman; 09-12-2021 at 08:43 AM. |
#4
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I have cut light square tube on a band saw and still ended up with bananas, but you should be able to straighten it out in a press.
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#5
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You will have bananas, you can cut them anyway you like.
Tubing if first made round and then welded and scarfed, then run through the shape rolls, square, rectangular etc. This allows for tighter radii in the corners but induces a lot of stress but the stresses are all equal so the tubing stays straight until you cut it.
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#6
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You can weld 2 angles together to make the channel .I like Jerry idea best .
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#7
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What Ron said. I have had better luck using a cut off disk in the grinder for less warpage, since you can control the heat better, but you will still be fighting the stress in the material from initial forming.
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Brian You don't know what you don't know. "It's what you learn after you know it all that counts." John Wooden |
#8
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I suppose if I only get bananas it might be ok.
I'm welding this down as a cap on something so if they don't go too far wrong maybe I can pull them straight enough. It's not a very important job and certainly not one that justifies paying for a channel to be folded I'll give it a lash and report back |
#9
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probably heat would help in the cut zone. any tube that I have split tends to flex toward the solid side, until you try it and it goes the other way
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#10
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If you were talking about Alum I would just rip it down a table saw...
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