As many of you may know, I have pretty much sworn off stain and like to use dye instead.  The down side of dye is that wood fillers don't take dyes well so you really have to make sure you have tight joints.  Late last week I was building a couple of flag cases (one cherry and one poplar) and I had a 45 degree miter that wasn't as tight as I liked so I've fretted and stewed all weekend about how to filler the slight crack.  After some experimentation, I finally mixed a little dry aniline dye granules with some 2 part epoxy.  The epoxy took the dye well.  I sanded the case to 240 grit and misted it with water to raise the grain and then hit it with 400.  Then I mixed the epoxy and filled the crack.  After a couple of hours, I resanded it with 400, re-wet the case and put 2 coats of W.D. Lockwood dye on it.  I liked the way it filled and it is invisible. I'm now a believer.

 

Before

 

 

After

 

 

 

Thanks for the information, Ron. What brand of epoxy was it?

Loctite Quick Set Lew.

I never would have thought of that Ron, I would have thought that the water based dye would not have mixed well with that chemical laden epoxy. Mixing some granules in with the epoxy was a really cool idea, thanks for the tip!

Good to know, I would have never thought of coloring the epoxy.

Neat, Ron. Good thinking. Same out really nice.

I've never used dye in exactly the way you describe but I've used it extensively when filling knots and worm holes with epoxy. Usually black to surround turquoise inclusions. 

You can also use artists' acrylic paints, chimney soot, sanding dust or even Kool Ade. 

You done good with that one!

Shucks guys, twern't nuttin'.  Necessity is the mother of invention.  I wasn't about to turn 2 board feet of cherry into kindling.