Replies

1. 
   Westchester | Feb 27, 2012 05:39pm | #1

   re-dissolving

   You should be OK with shellac over alcohol based dye stain.  Just mist on a few coats lightly before a heavy wet coat.

   SA

2. 
   sawdustjeff | Feb 27, 2012 11:26pm | #2

   Alcohol over alcohol

   Applying shellac, which is disolved in alcohol, over your alcohol-based Transtint dye is going to cause you some pain, I think. As the other reply noted, if you can mist a coat or two on before brushing on or spraying on a heavier coat, you may be OK. But the alcohol in the shellac is going to redissolve the dye.

   Regardless of how this project turns out, I would suggest you switch to water-based powder dyes for your next project. You'll find a wider variety of colors and the alcohol in the shellac won't cause problems with the powdered dye.

   Good luck.

3. 
   Rob_Sp | Feb 29, 2012 11:10am | #3

   Dye

   I don't think you will have any problem with a topcoat of shellac over dye applied over bare wood. Once the water or alcohol has evaporated the dye has penetrated into the wood. If you were using say, a waterbase dye over a shellac washcoat to prevent  blotching and then attempted to use an alchol base topcoat then you would have problems as the topcoat would dissolve the barrier coat. 

   But I can give you some indisputable and invaluable advice: When in ANY doubt when it comes to finishing, simply make a test panel and apply your finish schedule to it in advance, to do otherwise is a suckers bet.

   Good Luck

   Rob

1. 
   Quickstep | Feb 29, 2012 12:21pm | #4

   Rob,

   What you described is what I experienced. I brushed on some shellac and everything seemed to stay put. I had to grin when I read the second part of your reply. My inquiry was in fact for my test panel. I'm experimenting on a piece of curly maple, and I will only get probably 4-5 test panels before I'm out of material, so I want to make every test count!