Thanks for the tips - I've got a pair of tired looking AR2ax's that will get the Howard's treatment this weekend!
I've used Minwax Antique Oil Finish in this way after applying stain over the old finish to darken the scratches. Of course using Minwax is adding finish over the old finish.
Is Howards Restore-A-Finish a finish it's self? Or does it mend the old finish by melting it? In other words, is it a solvent or a finish? Maybe both?
I like to preserve the original finish, I will give Howards a try on my next project.
Now, what do you do if there is a gouge in the finish?
Bobby D.
Minwax Antique Oil Finish - this is the ticket - enough said - I have done a lot of wood restoration in my time - this is fool proof - anybody can do it and you get a superb finished product.
How does this stuff work with getting out scratches? I have some Dynaco A25's that I want to make better looking. One pair has a few small scratches, the second pair needs a bit more work as there is some larger damage.
With the slightly scratched set, should I sand the scratches out? If I do that, should I just use a regular wood finish as I will be sanding some of the original stain off? Or will Howards Feed'n'Wax make the scratches disappear ie: fill in the little grooves without sanding?
Nice tutorial.
note: bolded the edits
THC
The Restor-A-Finish will make almost all scratches blend in with the restored finish - unless you look really closely, you would never know they were there. The Feed-n-Wax does a decent job of making the speaker's surface even to the touch, but you can still vaguely see the scratches if inspected very closely.
As I said in the guide, there is no sanding required at any stage of the process.
R-a-F and other products like it fall unto the category of "finish amalgamators." They're solvents mixed with fast-evaporating spirits as carriers, plus various oils and dyes added for conditioning and color. The carrier evaporates so fast that the solvent requires heat from rubbing friction to soften the outer surfaces of finishes before the carrier vaporizes, taking the solvent into the air with it. The combination of solvent plus friction heat and rubbing softens the finish enough to blend out scratches and allow moisture trapped within the finish (white water marks) to migrate out to the surface where it evaporates as well, and the finish rehardens almost immediately after the carrier is exhausted. R-a-F is actually a blend of about a half-dozen different solvents, which makes it work on many different kinds of finish. For most any finish you put it on (except polyurethane), one of those solvents will soften the finish and the ones that don't serve as the carrier.It's neither. I don't know exactly what it is or how it works, but it doesn't alter the old finish in any negative way whatsoever - it simply brings back the natural coloring of the veneer or wood. It's not a solvent and it's definitely not a finish.
R-a-F and other products like it fall unto the category of "finish amalgamators." They're solvents mixed with fast-evaporating spirits as carriers, plus various oils and dyes added for conditioning and color. The carrier evaporates so fast that the solvent requires heat from rubbing friction to soften the outer surfaces of finishes before the carrier vaporizes, taking the solvent into the air with it. The combination of solvent plus friction heat and rubbing softens the finish enough to blend out scratches and allow moisture trapped within the finish (white water marks) to migrate out to the surface where it evaporates as well, and the finish rehardens almost immediately after the carrier is exhausted.
To see R-a-F act as a solvent, take a piece of finished scrap wood and either pour enough on it to form puddles and keep adding as it evaporates or just drop a piece into a jar of it and seal it up. If you keep the surface wet, R-a-F will eventually dissolve the finish.
R-a-F is really intended mainly for coating finishes, such as lacquer or varnish. On a penetrating oil finish, what you're basically doing is melting catalyzed oil that re-penetrates and doesn't sit on the surface, which is why scratches don't "blend out;" most of them are not just in a surface finish, but in the wood itself. You really shouldn't be seeing much improvement other than from the oils and dyes, which do act as sort of a "finish," though not one that's going to last long or provide any protection for the wood. However, most modern "oil finishes" are really oil blended with some sort of varnish to speed up the catalyzing process and provide additional surface protection, and R-a-F will work on what those leave behind on the surface.
If your speakers are finished with polyurethane, R-a-F won't do much of anything for you except cleaning and you might as well go directly to sanding.