Baltic Birch Plywood, 3 mm 1/8 x 8 x 8 Inch, B/BB Grade Sheets| Woodpeckers
https://www.ebay.com/sch/i.html?_fro...8%22&_osacat=0
eBay
Look it up
Been using it for years, I glue up for rebate
Baltic Birch Plywood, 3 mm 1/8 x 8 x 8 Inch, B/BB Grade Sheets| Woodpeckers
https://www.ebay.com/sch/i.html?_fro...8%22&_osacat=0
eBay
Look it up
Been using it for years, I glue up for rebate
Tin Can
Also search for apple ply or euro ply, all very similar, though subtly different
Apple ply is really a soft-core laminate intended for drawer sides, etc, and of premium price because it is free from the routine formaldehyde glues generally necessary for denser materials. I have used lots of it for other things, but wouldn't include it in my own list of suitable materials for a lensboard.
The 4x4 boards for earlier Speed Graphics and Graphic View 2 is the "A" board.
Sometimes they show up on eBay.
Good Baltic Birch is common in amateur aircraft building.
The OP might luck out finding some scraps from an Experimental Aircraft Association (EAA) member.
Take a field trip to a civil airport and talk it up with the Fixed Base Operators (FBOs)
"I would feel more optimistic about a bright future for man if he spent less time proving that he can outwit Nature and more time tasting her sweetness and respecting her seniority"---EB White
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