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 Post subject: Black Lacquer bubbling
PostPosted: Fri Sep 18, 2009 6:20 am 
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Walnut
Walnut

Joined: Tue Sep 08, 2009 9:16 am
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First name: Jim
Last Name: Dewar
City: Holliston
State: MA
Zip/Postal Code: 01746
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Hi All

I purchased the black and clear lacquer from StuMac and am having a problem with it. After I lightly spray there are small bubble in it which forces me to wait for the paint to dry, the I have to sand out the bubbles and then try again, only to find some more.

What am I doing wrong?


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PostPosted: Fri Sep 18, 2009 7:06 am 
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Koa
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Joined: Mon Mar 26, 2007 6:42 am
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Location: United States
First name: Stephen
Last Name: Ziegenfuss
City: Jackson
State: MI
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Country: USA
Focus: Build
Status: Semi-pro
Are you spraying in excessive heat or infrared light? Sometimes these things force an effective degassing of both the material and the wood, creating bubbles....

Stephen

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PostPosted: Fri Sep 18, 2009 7:46 am 
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Walnut
Walnut

Joined: Tue Sep 08, 2009 9:16 am
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First name: Jim
Last Name: Dewar
City: Holliston
State: MA
Zip/Postal Code: 01746
Country: USA
Focus: Repair
Status: Amateur
Hi

Thanks for the reply.

No, not at all.

The bubbles appear immediately after spraying. I am holding the can ten inches away and just going once over so no thick spraying here.


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PostPosted: Fri Sep 18, 2009 12:28 pm 
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Koa
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Joined: Fri Feb 01, 2008 11:37 pm
Posts: 1740
Location: Virginia, USA
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Are these bubbles hollow, ie, full of air, or are they solid lacquer all the way through? If the latter, it might be that your finger is getting in the stream of spray coming from the tip of the can, causing spatter. I finish with aerosol spray cans. When I first started I had a similar problem. Watch your finger. Also, you'll get a smoother finish with lacquer if you'll run hot tap water in a glass or cup and set the can in this for 10 minutes or so before spraying. Note that I said tap water. No heating up of water and can on the stove top. eek

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The only thing nescessary for evil to thrive is for good men to do nothing.


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PostPosted: Sun Sep 20, 2009 11:53 pm 
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Cocobolo
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Joined: Tue Mar 04, 2008 10:55 pm
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Location: Dallas, Texas
Not to be meant as condesending, but did you shake the can properly? Sometimes if the can has been on the shelf for a long time it takes a whole lot more than a 30 second shake to get it right?

Just another thing to consider?
MK

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PostPosted: Mon Sep 21, 2009 9:47 am 
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Koa
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Joined: Sat Jan 26, 2008 12:31 pm
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Location: Gaithersburg MD
First name: Erik
Last Name: Hauri
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What kind of wood - and did you seal the grain? If you're spraying onto a wood with significant pores without sealing, this is another way to get bubbles.

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