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Pin Size air bubbles Why
Posted by: Jim Munday (---.nycmny.fios.verizon.net)
Date: September 29, 2018 07:38PM

Having trouble working site

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Re: Pin Size air bubbles Why
Posted by: roger wilson (---)
Date: September 29, 2018 07:53PM

the reason that you have pin size air bubbles is that you have not removed the bubbles from the mix.

One thing that helps with this situation a great deal, is the use of gentle heat.

When "gentle heat" is carefully applied to the finish - being very careful to never over heat the finish, the slight added heat will remove all of the bubbles from the finish.

This procedure is used in factories and rod builders shops around the world to take care of the bubble issue.

It is simple effective, and as long as used correctly and never over heat the finish extremely effective.

Some folks use a candle, Some folks use a lighter. Some folks use a butane lighter. I happen to like using a heat gun very carefully.

I really never care much about the speed at which I mix finish, nor do I worry about the finish if it happens to have a lot of bubbles in the finish when I apply the finish. A bit of heat and "voila" the bubbles are gone and the finish is perfect.

Good luck

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Re: Pin Size air bubbles Why
Posted by: Tom Kirkman (Moderator)
Date: September 29, 2018 08:18PM

These can be the result of many things. Mixing too fast. Using heat (too much boils the finish and actually creates bubbles).

Mix more slowly or use a mechanical mixer to keep the problem from occuring in the first place.

.............

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Re: Pin Size air bubbles Why
Posted by: Linus Tay (---)
Date: September 29, 2018 09:38PM

I used to have that problem too. It was resolved when I stopped using brushes to stir/apply the finish. Apparently there's a lot of air trapped in the bristles of the brush and when you use it to stir the finish it gets transferred there. Now I use a spatula and bubbles are gone.

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Re: Pin Size air bubbles Why
Posted by: Phil Erickson (---.dsl.pltn13.sbcglobal.net)
Date: September 30, 2018 12:49AM

First of all, never use a brush to stir the finish! There is a great article in the "library" above about applying a good finish.

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