Re: avoiding air bubbles
Ben
I have seen small bubbles when I use West 407. More or less similar to the 410 Its a very light very easy too sand filler. I use that stuff after I fill with the High density fillers....to fill in imperfections after the first pass. The 406 is tough to sand but I like how it fills....plus the stuff is rock solid....good for high stress areas.
To get that stuff to the right consistency, as you know, it gets thick and its hard not to get air into it....at the same time making sure its totally mixed.
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