#1
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? Sanding Waist area, Shellac
I have built a Martin 1918, 1-18 replica, sprayed with shellac. It is almost dry enough to sand level and buff.
Does anyone have any suggestions on sanding the sides in the waist area? I find it hard to get in there. I am usually using styrofoam to back the wet sandpaper. Been using water but have been told there are better choices for shellac I have had decent results on small areas like a headstock but less luck on a large surface like a back. |
#2
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I use naphtha for sanding lubricant on Shellac.
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#3
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I've used sandpaper wrapped around a piece of PVC to sand in the waist area on guitars before finish - if you like styrofoam, get a round piece and have at it.
edit - I had another thought. Pool noodle as a backing pad, if you can find one in a small enough diameter. |
#4
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You can also buy a foam pipe insulator (the kind that you put around hot water pipes, Home Depot has them and they are cheap), then cut a pvc pipe and slide it in inside the insulator.
__________________
OM-28 Marquis (2005) Kenny Hill Player (nylon) Gibson AJ (2012) Rogue Resonator (kindling) |
#5
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You have to be extraordinarily careful in that area . Something soft to back or just folded paper and BARELY sand it. I don't wet sand shellac anymore but when I did I used walnut or olive oil.
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#6
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Any time I'm sanding contoured areas I back with cork that comes in 1/4" thick 12" by 12" squares that is sold to make bulletin boards. It's normally sold 4 pieces to a pack and is a great thickness to use for caul pads and sandpaper padding.
Cut whatever size you want and attach sandpaper with double back carpet tape. I typically cut my sanding pads 2-3/4" by 5-1/2" because that's the size I cut my 8-1/2" by 11" sheet paper to have a convenient size on hand. |
#7
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#8
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I've been using it in my shop for years. I've never found anything better for padding clamping cauls, so it gets used for that and many other purposes. |
#9
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A thought
I like the cork idea. I've been using large diameter wooden dowels, but plastic pipe and cork sounds like a variation I'll try. Larger diameter, the better'
Thanks! And an inflatable rolling pin sander sure helps if used carefully. Bought that, used that too. |
#10
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I no longer use conventional sandpaper at all on my sides, preferring Norton SoftTouch. I use 320/400 early, 800/1000 in the middle, and 1200/1500 pre-buffing. When I did use sheet goods, I back it with cut to size (2 x 3 inches is good) pieces of Flip-Flop, available in Stores every where quite cheap at summer’s end. That’s about now. They come in various densities, and the softer types are excellent for the waist.
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#11
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There is good advice here and to add, don't use water as a lubricant with shellac. Shellac is not water proof and you can get blushing.
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#12
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Yes, since the original post, I borrowed some EVOO from the kitchen. It works great, no corning at all. I do have to remember to bring it back in time for sauteeing the bacon and onions for boeuf borguinon.
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#15
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Also: Zorries, and Go-Aheads.
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