In article , Eric R Snow wrote:

snip

metal is done outside. All that being said, is there a reason NOT to
use 3/8 cdx on the walls instead of 5/8 drywall? It seems to me that
the plywood would be more durable and less likely to suffer any damage
from things banging into it than drywall. Also, the plywood doesn't
need to be taped. Painting and caulking is all the plywood would need.
The shop is full of machines which is one of the reasons I'd like to
avoid taping, mudding, and sanding. All that dust. And labor costs
would be substantially higher with the drywall. I can't do it myself
for at least 6 weeks but I can hire someone to get it done next week.

How about fire-rated plywood? Materials cost might be a bit higher than
nonrated plywood, but you get all the benefits of both the plywood and the
fire retardation.

Ben