Andy Birko wrote:
MichaelP wrote:
Your first mistake as others have said was not sealing your top and bindings with a 1# cut of shellac to avoid the oil and dust cross contamination. Do not ge down on your self. most will make this mistake once.
Just a quick point of order - I'm not the original poster. I'm just interested in the advice as I'll be finishing my first rosewood git in a little bit. And I'm thinking of maple bindings too.
Next question - I'm perplexed as to how one could scrape the bindings flush while avoiding oil and dust cross contamination. What's the order? Bind, scrape, mask off the rosewood, seal maple and top with shellac, pore fill rosewood?
p.s. I'm still contemplating the epoxy - I am pretty messy but I've still got a month to think about it.
p.p.s. I was also asking about the water because my pre-bent sides have what looks like water staining on them from the bend. I'm hoping this will come off when I sand/scrape etc.
oil contamination requires a carrier for the oil (a solvent or water). Dust contamination required a fine dust like made from sanding or sawing.
When you use a scraper you are making ribbon type chips not dust that far to large to settel in the pores of a lighter wood.
Most color staining from rosewood is cause by a carrier transfering oils from the rosewood to the lighter wood. this is seen as a color stain on the light wood. It is differnt from the dust settling into the pores and grain structure of a lighter wood. Now it is possible for a carrier to carry either and both to the lighter wood.
It is very rare for rosewood to color stain a lighter wood just by surface contact. you pretty much have to interduce the color by a carrier like alcohol or some other solvent or water.
lay a piece of maple on the bench and contact rub a piece of rosewood across it unless the rosewood is wetted with a solvent or water you will not transfer color. A scraper interduces no carrier and if it is properly sharp it will not create dust.
The stains on your pre bent sides are more than likely resin that has cooked out during bending. This will scrape off easy. It may be moisture staining if the person tha bent them used a good bit of moisture but this to would scrape off fast.
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