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mike.B
Joined:
03 Sep 2009
Posts: 4
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 Posted: 02/14/2010 at 2:29 PM Post subject: paint information |
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Hi. Im going to have my koa tb 1000s refinished.either in clear or its original black.It is currently unfinished.
Does anyone know the brand, name of color, or code #'s of the finishes that travis bean used?Also, an outline of the amount of coats.ie: primer ,undercoat,color & clearcoat.
Anything that I could pass on to the finisher would be great.
many thanks.Michael.
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admin
Joined:
01 Jun 2001
Posts: 1266
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| Posted: 02/14/2010 at 3:07 PM Post subject: RE: paint information |
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Hello Mike
I have 'some' information on this. They used Sherman Williams lacquer based paint and lacquer clear coat. Originally they did lacquer 'baths' where they submerged the body first in lacquer. Originally they masked out the control cavity and receiver portion of the body (you can see this in the early TB1000A photos), but that was causing body cracking. So they ended up filling all areas with lacquer to completely seal the body.
Later, they used wood filler on the body. Sometimes they would color the filler to make the grain stand out more.
Here is the basic procedure on the bodies:
- Sanded the body
- Sprayed with thin lacquer (30% lacquer / 70% lacquer thinner) let dry for 1 day
- Applied filler (sometimes colored, sometimes thinned with mineral spirits). Let dry for 1 day
- Sprayed 5 coats of clear (each coat had an hour of dry time)
- Sprayed 2-3 coats of color (hour dry time w/each coat)
- Sprayed 5 coats of clears (hour dry time w/each coat)
- Sanded with 220 grit
- Sprayed 2 coats of thinned lacquer
- Let dry for 2 weeks
- Sanded with 600 grit
- Let dry for 2-7 days
- Polish
Apparently, the more drying time the better when it came to lacquer. The wood filler was huge part of the process. Koa is naturally very porous, so it doesn't take lacquer very well.. basically soaks it in. By adding the filler you created a layer for the lacquer to stick like primer.
Hope this helps. Make sure you're aware that a refinish lowers the value of the instrument. Spraying lacquer these days is pretty difficult.. so that might not be a option now-a-days. I'm sure the above procedure is completely different with polyurethane. Also, those coats were approximations, I was told approximately 15 coats / body. But for sure they sprayed clear, then color then clear on the colored Beans.
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