Air bubble's in my plastic?

[fishley]

Can eny one tell me why I'am geting so many air bubble's in my plastic.I'am makeing my own type of jig's and I'am haveing a heck of a time some turn out great and work well but most have to many air bubble's please help Ive allredy wasted a gallon of plastic and it aint cheap.thank's a ton and good fishing.[laugh]
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