08-27-2014, 09:31 PM
Warren,
I honestly can't tell, as it is sensitive to the ratio and I do it by the time elapsed. Don't think though that I had to add that much of a thinner. When I did 19-20 sec it would run on me, but when more than 24 sec. it would give plenty of grain, which would be sanded off anyway, but, as you know, with plenty of labor involved.Higher than optimal air pressure does not help either.If you can't get a visc. cup,I am sure that you can get correct mixture by volume. As you said about getting the starting point.Once you get it by the trial and error, it will be consistent.In my old days the victim always was a side of the garbage can. I like 25-30 psi at the spray gun.
I honestly can't tell, as it is sensitive to the ratio and I do it by the time elapsed. Don't think though that I had to add that much of a thinner. When I did 19-20 sec it would run on me, but when more than 24 sec. it would give plenty of grain, which would be sanded off anyway, but, as you know, with plenty of labor involved.Higher than optimal air pressure does not help either.If you can't get a visc. cup,I am sure that you can get correct mixture by volume. As you said about getting the starting point.Once you get it by the trial and error, it will be consistent.In my old days the victim always was a side of the garbage can. I like 25-30 psi at the spray gun.
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