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Dyes and Tru-Oil

Consider that tru-oil is brownish/amber, so get dye that is consistant with that - colors like purple or blue or green would be nada.  Colors like red... maybe.  Darker browns would be ok.  On second thought... some greens might be ok too, sort of an olive type of thing.

The problem might be the interaction of the whole mess.  You can get acetone based, mek based, alcohol based, water based, dry... .all sorts of dye.  I think I'd go for an acetone or mek based dye, or mix dry pigments with acetone or mek or even better - white spirits (which are, as we have found out, greater than 53 percent of tru-oil).

 
The oil based substances like Tru oil won't take most of the "dyes" that we think of when we say dye.  Most of the dyes we use dissolve in either water or alcohol or both.  Drop some of your mek liquid dye in mineral spirits and watch what happens?  I tried to add a MEK dye that dissolves in alcohol into a tung oil.  Tung oil is "tung oil" with a varnish mixed in usually.  I stirred it up and wiped it on some maple.  All looked great until I came back the next day.  The dye eventually precipitated out of the mixture and created a bunch of tiny brown dots (I used amber which is redish brown not yellow) where it concentrated.  Many furniture finishing forums recommend artist oils to tint true oil / tung oil and oil based varnish. 
 
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