Homebrew PCBs

I bought a whack of these:

 

http://www.ebay.com/itm/351681662704?_trksid=p2057872.m2749.l2648
<http://www.ebay.com/itm/351681662704?_trksid=p2057872.m2749.l2648&ssPageNam
e=STRK%3AMEBIDX%3AIT> &ssPageName=STRK%3AMEBIDX%3AIT

 

I don't know how accurate he is on age but if they're even just pre mid-80s
that should, I hope, yield the right look.  I do a lot of vintage/retro
recreations and I just *hate* the look of modern PCB stock.  Totally ruins
it.  If these are actual vintage early-70s I'll be able to make
reproductions that visually are difficult to discern from original.

 

Only negative is at 0.03 they are half the usual thickness.  I had a crazy
thought that maybe I could glue/laminate two together?  Is that
possible/sane?

 

Brad