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Frankg

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Reply with quote  #1 
Any one use this? The problem I have is bubbling when applying it to the surface. Tiny bubbles start forming and I have to keep brushing over them to hopefully make them go away. The problem is once it dries, the bubbles don't go away and leaves a whitish tint bubbly finish. I wonder what I am doing wrong.
Any suggestions would be greatly appreciated.

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Frank Galica
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Udie

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Reply with quote  #2 
Frankg - I have not used this product on any of my toys. Old school thinking says to apply a 10-17 percent thinned first coat. It will raise the fibers and release the trapped gases in the wood. Sand and re-apply. I know the can says it can go on bare wood, they all say that. I have experienced bubbles on some of my projects using similar products. The air bubble just does not have the strength to reach or break the surface. My trick is to have a hair drier or heat gun close at hand. With a circular motion heat the area of the bubble, softening the varnish a little allowing the bubble to break to the surface and level out. Another very old school trick is to blow on it using a straw and your breath - worked for me.
Chuck242

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Reply with quote  #3 
Hey Frankg
Try this...
start by conditioning the brush in the thinner you are going to be using. To do this dab it to load the bristles and dry it by striking over the the edge of a pail. This will help the finish move over the brush, trap fewer air bubbles and lay out a little smoother.

Also, we all learned to paint by dipping the brush and striking it on the edge of the paint can to remove the excess. This is no good when using poly and vanish finishes, it actually causes air bubbles to form. Instead press the brush into the side of the can to press out the excess. You may have to pour the finish into a glass bowl or mason jar so you have room to press the brush against the inside of the container.

Give it a try it should help[wink]

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Muskokamike

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Reply with quote  #4 
What kind of brush are you using? I saw a forum on foam brushes (haven't read it yet) but they should NOT be used for water based finishes or sealers or clear(s).....whenever I've used one it looked like Mr Bubble came to visit.....

Before I learned how to use a cup gun/canister gun, I found the softest bristled brushes work best for bubbles as well as visible paint strokes......but since I learned how to spray, my brushes are reserved for detail work......
Frankg

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Reply with quote  #5 
Muskokamike,

I use both. I find if I keep refreshing my brush with new poly, it helps. Keeping the brush from getting over soaked (the bubbles start to form in the brush itself) in the medium also seems to alleviate the problem by wiping my brush off with a paper towel and do a new dipping. Either way then some bubbles seem to sneak in their and I find myself having to "brush over" to remove them. Thanks for your input.
Frank

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Ken Martin

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Reply with quote  #6 
Hi Frankg
   I do not know much about polys, for sure, a master painter told me just recently that the reason I was getting brush strokes when painting anything, was I was trying to paint on a smooth finish with the paint brush, instead of letting the paint settle into itself.  He was saying to do the prep work right then on the last coat of paint don't paint it on, just let it flow on from the brush, then let it settle into itself.
   Not sure if that would help with poly's, but I know when I have used poly's the more I brushed the more bubbles showed up.
Tell us what works best for you when you find it, because I for one am really interested.
Thanks everyone above for the advice so far.
With the help from our awesome forum members we can all get better.

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