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White spots on catalyzed varnish11/18
I built a solid walnut table for a customer roughly five years ago. The finish is catalyzed varnish. No stain.
The customer recently sent a photo (attached) showing white spots that have developed and I don't have an answer for him.
I would appreciate any thoughts anyone might have. Thanks
I don't think that it's possible to tell unless you know if these abrade off at all, either with a cloth, or by scraping with your fingernail, or a white Scotch-Brite.
Squirt naphtha onto it and see if the spots disappear when the naphtha is still wet. Then, wipe away the naphtha and see if the spots return after the naphtha evaporates.
All you can tell from a picture is that there are white spots. Nothing else. You need to manipulate them, play with them, and see what happens. You don't know if these are under (in) the finish or on top of the finish or something to do with the surface of the finish. It looks like dried drops of milk that haven't been cleaned.
If your customer is some distance from you, tell him to wipe them with Endust to to report back to you what happens. Endust has no wax in it and it has no silicone oils in it.
Dan, Thank you. After reading your response I should add that the customer applied steel wool in an attempt to get rid of the spots and was temporarily successful but the spots returned.
possible catalyst bloom