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Walnut turned white.

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Forum topic by scvwood27 posted 02-24-2015 11:57 PM 824 views 0 times favorited 12 replies Add to Favorites Watch
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scvwood27

117 posts in 1415 days


02-24-2015 11:57 PM

Made a frame from walnut. Sanded it, cleaned it with mineral spirits, let it dry and finished it with spray satin lacquer. Why ?


12 replies so far

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johnstoneb

2143 posts in 1637 days


#1 posted 02-25-2015 12:05 AM

It looks like some kind of contamination didn’t let the lacquer adhere in places. Sand it again and blow or wipe the dust off without the mineral spirits.

-- Bruce, Boise, ID

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JoeinGa

7482 posts in 1471 days


#2 posted 02-25-2015 12:14 AM

Was it “old” walnut that had been painted before?

-- Perform A Random Act Of Kindness Today ... Pay It Forward

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scvwood27

117 posts in 1415 days


#3 posted 02-25-2015 12:22 AM

No. New walnut.

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JoeinGa

7482 posts in 1471 days


#4 posted 02-25-2015 12:26 AM

Well there goes MY idea… sorry.

-- Perform A Random Act Of Kindness Today ... Pay It Forward

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jumbojack

1667 posts in 2088 days


#5 posted 02-25-2015 12:27 AM

Sand it down again, sorry. Wipe it down with lacquer thinner really well. Let the thinner flash off for an hour. The hit her again with lacquer. Dont let it out in the sun. 55 degrees or better. If your lacquer and frame are at or above 60 degrees you lessen the chance of trouble. You should be golden.

-- Made in America, with American made tools....Shopsmith

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scvwood27

117 posts in 1415 days


#6 posted 02-25-2015 12:32 AM

Ok jumbo. Temp isn’t a problem, it 75 degrees in Southern California.

View Dark_Lightning's profile

Dark_Lightning

2633 posts in 2573 days


#7 posted 02-25-2015 03:21 AM

Looks like maybe blushing from humidity. Was it raining recently, where you are? I live in SoCal, and it rained here on Sunday and Monday, and a couple of days last week.

Possibly, the mineral spirits hadn’t evaporated, as well. That takes longer when it is humid.

-- Random Orbital Nailer

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jumbojack

1667 posts in 2088 days


#8 posted 02-25-2015 04:03 AM

Probably the mineral spirits.

-- Made in America, with American made tools....Shopsmith

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Deycart

444 posts in 1722 days


#9 posted 02-25-2015 05:22 AM

Looks like the wood was not dry enough to me. What was the source?

View MrsN's profile

MrsN

975 posts in 2990 days


#10 posted 02-25-2015 02:38 PM

I have had lacquer do that when the humidity was too high. You can sometimes fix it by using a hair-dryer to dry out the finish.
otherwise sand down and try again in a slightly dryer environment.

-- ----- www.KNWoodworking.com ----- --

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scvwood27

117 posts in 1415 days


#11 posted 02-25-2015 05:57 PM

It was raining the day I applied the finish.

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jumbojack

1667 posts in 2088 days


#12 posted 02-26-2015 04:37 PM

Normally when it is atmosphere that clouds or ’ blushes’ lacquer it is just that, a foggy area. The lacquer in this case has separated from your material. I still suspect it is a contaminate (mineral spirit) that caused you malady.

-- Made in America, with American made tools....Shopsmith

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