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Re: The hated Pledge!

Posted By: Tom Long <finedge@mn.rr.com> (CPE-65-29-52-29.mn.res.rr.com)
Date: 5/8/5 17:45

In Response To: Re: The hated Pledge! (roger demuth)

Boiz - boiz. No need to be testy. The only thing worse than pledge in the hands of housewives who don't know any better is refinishers who use fisheye remover (silicone) in all of their lacquer or even spray another piece with a silicone contaminated gun cuz they SHOULD know better. They've just spread the problem to every piece of wood they've sprayed. Gits the piece out the door and the check in the bank but pity the poor slob that finds themselves re-refinishing that piece some day. The automotive guys can get rid of silicone with an aromatic hydrocarbon wash cuz that sheet metal has no pores to hide the stuff. It doesn't work so good with wood. Enough silicone (and it doesn't take hardly any at all) will remain in the pores to cause fisheye despite my very best efforts to scrub it out. I did a drop leaf table the other day that was dunk stripped, pressure washed, dipped in oxalic, water washed again, sanded, washed with lacquer thinner, bleached with two part, neutralized, sanded again and washed again with lacquer thinner. The lady wanted a clear finish and as light as possible so a coat of CAB lacquer went on. The result: severe fisheye on the top, moderate fisheye on the drop leaves, and no fisheye on the straight leaves. A nice coat of lacquer will desolve the minute amounts, draw them out of the pores, create a surface tension imbalance and presto - craters that look like fish eyes. Fisheye can be eliminated with fisheye eliminater which is a very small amount of silicone that brings than lacquer surface tension closer to the desolved silicone surface tension. In my view this should be a last resort AND the refinisher should use a dedicated, (already contaminated) gun. Never-ever spray silicone if'n ya don't have to and clear everything else out of the spray booth if ya do. You'll contaminate everything in sight. What's the big deal? It doesn't take hardly a speck to cause a problem. The much better solution is a barrier coat(s) of shellac. Silicone is insoluable in alcohol so shellac will not fisheye. Follow this with a couple of LIGHT coats of lacquer. Why light? Cuz too much lacquer thinner in a heavy coat will burn through the barrier coats, desolve the silicone that is still there and presto - fisheye - again. I've seen it happen - George wants to put on a nice wet coat as that final so he does and - presto - boy I hate it when that happens. And it always happens the day before a customer is due in to pickup the piece. Why is that? If there's silicone in the wood there's not much you or I can do about it - but please don't add no more if it isn't necessary. PLEASE?

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