[pianotech] blasting cabinet construction?

[Stephen Grattan]

Hi Jim,

I built mine 12 years ago with 1/2" plywood.  It eroded about 1/8" inch and I 
could see it wasn't going to stop so I lined just the back with sheet 
metal-which of course stoped all erosion.  I could not see any other way to stop 
blasting a hole in it.
 
Steve Grattan
Associate Member PTG




________________________________
From: jimialeggio <jimialeggio at gmail.com>
To: pianotech <pianotech at ptg.org>
Sent: Wed, December 22, 2010 9:39:41 PM
Subject: [pianotech] blasting cabinet construction?

With a siphon feed blasting gun (beads) in a blasting cabinet, can the cabinet 
be made of plywood and still be expected to perform long term without eroding in 
a couple of years? Bill Spurlock's article mentions 1/4" plywood...seems a bit 
wimpy, but maybe not.

Trying to simplify this as much as possible, and would like to avoid lining the 
thing with sheet metal.  I'm planning to use siphon feed not pressure feed, 
because although siphon is slower, it seems much easier to contain and recycle 
the process.

Any thoughts?

Jim I

Jim Ialeggio
grandpianosolutions.com
978- 425-9026
Shirley, MA
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