Waterborne Dye over Oil Stain
A finisher gets advice on an unusual schedule: applying waterborne dye over a coat of oil-based stain. December 28, 2014
Question (WOODWEB Member) :
I created this sample by first staining with SW Oil Classic Stain and then going over it with a transtint dye dissolved in water about two hours later. On both hardwood and plywood samples the waterborne dye didn't raise the grain seemingly because there was still oil in the pieces not letting the water penetrate. With a lacquer topcoat the sample is a near perfect match to a mantle I'm trying to match an entertainment center to. I've never used dyes before and to my understanding, normally I would dye the wood first to even the color and then stain if necessary. I'm not really worried about uneven coloring or blotching, the wood is rift sawn red oak with no dramatic color differences, but I am wondering is there any reason not to do this? I could mix the dye with DNA, but would rather not have the extra expense and was worried it may wipe off the stain or cause it to streak and I don't want to spray it on.
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From contributor K:
From the photo it looks like you wiped on the die (assuming the dye is on the right and the wiping stain is on the left). Be careful with this, dyes donít handle like wiping stain. If you rub back across a spot youíve already wiped the color will darken quickly on the overlaps. I always spray dye and I use acetone as my vehicle. The S61 dye concentrates from Sherwin Williams are excellent. You can do it either way (stain first then tone with dye, or dye first then wipe stain). I always prefer spraying dye first. In most cases I can achieve the color Iím looking for with the dye alone. Very rarely do we have to wipe stain.
From the original questioner:
I have already started this project moving forward with the wiping stain first. I had also decided to go ahead and spray the dye mixed with acetone or possibly 50/50 dna/water mix per the transtint data sheet. I was hoping that by using the wiping stain first, since it wasn't seeping out of the pores on the solid pieces like the dye was, that when I sprayed the dye on the solvent wouldn't soak in and bleed out as much.
From contributor T:
Contributor K, you're good to go on all counts! One of our routine finishing schedules is "Paste Wood Filler" (oil based) followed by dye stain, mostly wiped on using dna reducer. It isn't too challenging to keep a wet edge wiping the dye. Weíve been at this long enough to appreciate your successful color match with this approach. Itís sensible of you to ask anytime youíre testing but again, no risk of material conflict or future finish failure.
From contributor M:
The transtint can probably be put into your topcoat. I would put a small amount of it in the first couple layers of topcoat (after your clear sealer coat). That eliminates having to do the dye as a separate step and it gives you a much more even color.
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