Straightening tips help Metalworks

Hi All,

Maybe a member or @metaltechs can advise on the best approach to straighten an alu plate. I remember of the hydraulic press way but I don’t remember if we have one in the space and surely don’t have one at home.
So many thanks in advance.

More details about the project.
To make a long story short. 3D printer heat bed made on PCB have the bad habit of flexing a bit when they get heated and the constant cycle create small banding artifact (horizontale line visible on the print surface) I than bought an aluminium plate to counteract that effect.

Anyway the plate is bent way to much to be used on a printer view picture than I have 2 options and would love to avoid the bin options and maybe I can straigthen it enough to be usable

The bent is only on one side as you can see from the picture.

We don’t have a press which will take a sheet this size.

And even if we did, it probably wouldn’t work unless it was ginormous ( Megatons).

The problem is that the initial flattening will just be elastic and the sheet will spring back to it’s deformed shape when the load is removed. So the sheet has to be deformed beyond flat so that it ends up flat.

The classic method of flattening is to put on a flat surface with the curved surface face up.
Shim the ends up by the centre gap and then hammer it flat with a plannishing hammer until flat.

This requires skill! As an unskilled person I’d buy a new piece!

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I have got pretty good at straightening stuff with a vise and shims will be happy to have a go

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That’s good to hear Joe. I wanted to drop by this evening but the in-law are arriving today.
Hopefully this week let me know when you’ll be in the space.

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