Got 'em already. You can get an AK reciever flat template at
www.nonguns.com for free.
If any one has the AK47 reciever flat template in a .dxf, .dwg, or any CAD file that would be great. I'm going to make a new flat template.
I'll have a look at aluminum but steel is a lot stronger and I'm not set up to weld aluminum. Also, once I make the bending dies and get the final design worked out, it wouldn't be that hard to make a couple if you guys want one. Heck, I'm planning to make 3 just for myself. One with AK underfolder, one with the ACE side folder I've got in the parts bin, and one with solid synthetic furniture.
I need to buy more SKS D's.

I'll have some more updates tomorow night as I'm planning to spend Sunday in the shop getting this final prototype finished and maybe even test firing.
And that's the whole point.