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white haze on finish

3/1/17       
Nick

this problem arrived at my shop the other day & this is the story as it was told to me from 3 of the parties ( minor differences in each story) of the 6 parties involved (seven now including me);
cabinets were made 1.5 years ago, birch euros with flat panel doors, end panels and drawers stained and finished with a Rudd deep red brown cherry colored stain and satin CV. the customer did not like all the varied grain showing through so the Rudd rep made up a highly colored shader in a red/brown using Rudd dyes. 2 shader coats were applied all but eliminating any visible wood grain (I don't know the thinner to finish ratios) then 2 more top coats of CV (I 'd bet at this point it's exceding the 5 mil limit and then some). After 2 weeks a sticky oily white haze appeared on all the surfaces that had been shaded, the backs that weren't touched still looked great. this was a year ago.After a month of the white haze and no answer as to what caused it (Rudd's reponse was something is precipating out of the finish) the cabinet maker sanded off all the finish and refinished using the same finish schedule that caused the problem (yes, that wasn't too smart but sometimes we get so busy we forget slow and steady is faster then full steam ahead) and of course 2 weeks later the white oily haze appeared again now close to a year later the owner wants to get it right and move on. the cabinet maker and the manufacturer are paying.
l have one of these doors in my shop and the formaldehyde out gassing from it can be smelled from 5' away and the furniture maker who recommended me says the whole house reeks of it (yes l told him that all the cab parts should be taken somewhere outside of the house. Plus the cabinet maker did finish one drawer that was misplaced in his shop with SW waterwhite CV and it has no oily white haze and looks perfect
So l have made a acceptable sample and my plan is to chemical strip, sand & finish...simple as that. of course l'll test first on the door l have.
now, if you're still with me; has anybody seen or heard of this before? or know what's going on?...thank you.

3/1/17       #2: white haze on finish ...
RichardP

Over catalyzed the extra topcoats.

3/1/17       #3: white haze on finish ...
Nick

that was my guess. either a too concentrated catalyst or catalzing the shader by volume after mixing in the thinner and color instead of before. Thank you for the reply.

3/6/17       #4: white haze on finish ...
JeffA

If it's over catalyzed, you can wash off the leached out catalyst with baking soda. Mix 1 part baking soda with 10 parts water and wash down the parts. Soak the rag and then squeeze out most of the mix. Don't over use the rag but keep getting new ones.


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