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 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20101223/ce428f8c/attachment.htm>
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