Perhaps not helpful, but I was about to draw one up and print it when recently faced with a similar question and instead just re-purposed the original drive's mounting brackets. Per the attached pic, after bending the tabs 90deg, the existing holes in the PowerBook version of SCSI2SD align perfectly (in my Duo at least).
Everything you see in the pics is sheet metal, mostly stainless and Hot-rolled Pickled and Oiled steel. There is a little copper medallion as well. The big booth is just a lot of steel panels welded together.
Since I didn't know what hardi panel was, I went and looked it up. No, we don't use that at all. All of the paneling on the Strippit machines and their consoles is fiberglass.