9 mm ≈ 3/8″ (7 plies) 12 mm ≈ 1/2″ (9 plies) 18 mm ≈ 3/4″ (13 plies) – From [3] Ultimate guide to Baltic birch. The core of regular hardware store plywood. Pretty bad in comparison.
The exception is my small hoard of odds and ends, cutoffs and waste from a particular species of plywood with a multitude of uses. Baltic birch plywood is known for its stability, strength ...
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