Re: [CAD_CAM_EDM_DRO] Re: Steel plate for hexapod bed

I returned the plate to Metal Supermarkets, and they gave me a new one.
It's not perfect either, but appears to be a lot better. I do wish I had
a giant press and monster milling machine to flatten this out perfectly.

The pieces they sold me were cut with a plasma cutter, so stresses from
a big shear weren't an issue, though the heat might have been.

I'm using plywood for the bed beneath the steel; the torsion box idea is
worth considering. I think it's unlikely that I will ever be able to
machine steel, but I'm hoping to be able to do aluminum.

For those who are curious about what I'm doing, I have a little info,
some screenshots, and a photo of RoboFac:
<http://robofac.sf.net/>

Simon

Graham Stabler wrote:

>[...]
>
>
>Another option is to build a base with the torsion box type
>construction like mine but use MDF, glueing does not tend to distort
>the structure and MDF is very dimensionally stable if kept dry. It
>would rather depend on the machining you intend.
>
>
>