[QUOTE=Vaughn McMillan;320081]Unfortunately, the felt tip markers will also fade over time. It's also more difficult to get an even color with them. Transtint is pretty expensive, but a little goes a long way. I'm still using bottles I bought 3 or 4 years ago, and I was dying bowls and hollow forms instead of pens.
Bob, I'd use alcohol as the carrier for the Transtint, because it'll raise the grain a lot less. It also dries much faster. You may still get a little grain-raising, but when that happens to me, I sand very lightly with 600 grit to knock the grain back down, then add another coat of dye. It usually only takes one or two of these cycles to get the grain to stay put. I do the same routine when I'm using water as the dye carrier, but it just takes longer between coats to dry, and more repetitions to get the grain all the way down.
I mix aniline dyes with the least amount of water that will dissolve them. Then I use Isopropyl Alcohol 99% pure as the carrier, not the dreaded Methyl Hydrate.
Aniline dyes are good and colorfast, although the ones I've seen need to be mixed with water, so you're back to the whole grain-raising issue.
Mack C. in Brooklin ON
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