Advice for rigidity upgrade. To profile or not?

[Nealieboyee]

I would use a single piece of 5 or 6mm but if you already have the 2 mm plate then triple it up.

I would do both - the 10mm plate to act as the sub base to be tapped into for fixtures etc. then add the 40mm sections underneath ensuring they are joined to each other.. Adding another skin under the 40mm sections (even 2mm steel would be good) to make a sandwich.
But it won’t count for much unless you can tie the base to the sides. Do you need open access both ends ? Can one end be full height shear panel joining both sides and the base ? Or can the corners be triangulated at least rather than squared off as drawn.

Thanks very much. Yes i have loads of 2mm steel plate lying around. I'd rather use that than buy new stuff. Is this what you meant by use the 10mm plate AND the profiles? I have the 10mm plate bolted to the platform created by the profiles. Front view.


Now side view. IF I have enough profile i can lay them next to each other touching. But if not I will have to space them as in the second pic.

Is this a working machine your trying to extend or just a design model your changing.?
Reason I'm asking is because you don't show ballscrews or any linear drive mechanisms for long axis.


Without knowing how this fastened/designed then not much point suggesting alternative ways to stiffen other than what you shown because more than likely clash.

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Thanks Jazz. Yes this is actually my current machine that I want to extend a little bit, but at the same time add a bit of rigidity. Don't get me wrong, it works great and I can get some decent cuts in aluminium, but I'd like to stiffen it up where i can, using what I have laying around. I removed the linear motion components to clear the clutter in the drawing so you could see which base and profiles i was referrring to.