I’m refinishing an old side chair which has a very dark brown finish that resembles paint more than it does stain. I have stripped it (scraping and sanding in lieu of using chemicals as the owner wants to leave the old and fragile upholstery in place ) and would welcome any thoughts on concocting a suitable stain/paint and selecting an appropriate topcoat. The original color almost totally obscured the grain, except where wear had exposed the wood beneath. Chips and dents over the years had left dozens of uncolored areas which, even after a thorough cleaning with mineral spirits would not accept dye or pigment stain. It appears the chair had been given a clear coat sometime after much of the color had been chipped away.
My question first is this: how can I best achieve a very opaque color coat? It will need to be custom mixed. I have mixed Minwax Jacobean with a heavy dose of burnt umber artist oil color, and am reasonably satisfied with the color match. I think a small amount of yellow/red will have me there. As I’ve tried this approach before, I do know the concoction takes forever to dry. I will add a small amount of Japan drier to the mix this time around. What I don’t know is whether I’m likely to have trouble later, having mixed a stain this way (i.e. starting with a Minwax stain – comprised of who knows what – as opposed to using a totally homemade recipe). Anyone have thoughts about the maximum amount of artist oils to use for this kind of a stain or for a homemade one? Or is there a better way to achieve a very opaque effect, short of painting the chair?
Which brings me to the second question: is there in fact a clear line between a paint and a stain? Or is it simply a matter of degree of penetraton? I’ve seen this kind of finish on several pieces and am having trouble accepting the fact that anyone would have “painted” over a fine looking wood in the first place.
What about a topcoat? Any suggestions? I’m thinking of clear coating with shellac. This will need to be a hand applied topcoat, since I’ve not been able find a tape that will stick well enough to the upholstered area to allow me to mask that off.
All thoughts will be much appreciated.
Joisey Girl
Replies
JoiseyGirl,
I think you have pretty much solved your problem. There is no way to really tell what you're dealing with there in terms of the paint you've removed and the mixture you've created. I don't think you're mixture will "blow up" on you as far as being able to serve in that application. If you get the color with that concoction, the mixture of ingredients should not be a problem. Experiment on scrap first, of course.
Shellac would be an excellent top coat, or as an intermediate between the paint and lacquer. Shellac will adhere to the paint without problem. If you use a shellac with any wax content and you want to finish with lacquer, use nitrocellulose. Use dewaxed shellac as a base for any kind of lacquer.
Rich
Don't ever learn anything new. Rather than give you satisfaction that you know more than you did, it will only confirm you know less than you thought by opening horizons to things of which you had never dreamt and which you now must explore.
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