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Machine sanding rosewood
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NorCalluthier
Posts: 136
Joined: Apr. 16 2016
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Machine sanding rosewood
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Hello All, At age 78 I don't have the stamina that I had as younger man. I've been thinking that I ought to get a sanding machine of some sort to conserve my energy, and of course a drum sander is a more economical choice than the holy grail, a wide belt sander. My experience with drum sanders has not been a happy one. Sides can be fed in at an angle, but backs need to go straight through, for a couple of reasons. A particularly resinous back will gum up a drum in one pass. And, that back usually happens to be one of my best. I've been contemplating making a drum sander with a drum large enough, and slow turning enough, to avoid the heat build up that melts the rosewood resin. A big project! Anyone got any work-arounds? I have heard of spraying the drum with Pam from the grocery store, and I have thought of spraying with "GlideCote" teflon spray, but haven't tried it yet. Cheers, Brian
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REPORT THIS POST AS INAPPROPRIATE |
Date Aug. 13 2018 17:18:42
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constructordeguitarras
Posts: 1677
Joined: Jan. 29 2012
From: Seattle, Washington, USA
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RE: Machine sanding rosewood (in reply to NorCalluthier)
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I find that light passes, with the coarsest belt you can get away with, until you have to change to a finer grit to avoid having deep scratches remain--and then successively finer grits, so maybe 60, 80, 100, 150, 220 grits--works for me, and I only ruin the last belt, on my 16/32 drum sander which is now made by Jet (though I have an original Performax). The belts cost around $10 and I consider that part of the cost of making a guitar (though it irks me to ruin one). Because the drum is fixed at only one end, I find that no matter how carefully I make it parallel to the table, it always flexes, causing the work to be thinner at one end. So I run everything through "both ways" and end up with plates that are thinner at the edges and thicker in the middle, which I find acceptable or even useful.
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REPORT THIS POST AS INAPPROPRIATE |
Date Aug. 17 2018 2:19:21
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