[SML] Butt board schematic

[Brian Munroe]

Pretty much a rip of plywood (8"?) with foam padding wrapped in vinyl or a similar fabric.  

Sent from my iThingy. Please excuse any typos

> On Mar 8, 2017, at 9:49 AM, Jeffrey E. Salzberg via Stagecraft <stagecraft at theatrical.net> wrote:
> 
> They'd be different in every theatre, I'd think, and in some theatres, different from seat to seat.
> 
> 
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