ThirstyBarbarian
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Does anyone have advice for working with SMALL amounts of 2-part foam? I have 3 things that I want to fill with foam. The volume I want to fill in each is 9.71 cubic inches. The foam can expand up to 20 times its original volume, so the original volume for each is .49 ci. That's 7.96 ml. Since it is 2-part foam, each part is only 3.98 ml.
How do you measure and mix such small amounts? It seems like a process that would be prone to error. If I'm trying for 8 mls of original liquid in the cup in which I am going to do the mixing, doesn't it seem like an ml or 2 could remain in the mixing cup when I do the pour? 2 mls out of 8 is a significant error, and then if I wanted to complete the casting, I'd be stuch trying to mix even smaller volumes!
I'm considering mixing the liquid for each of the 3 pieces and pouring a third into each, just so I can get the rations correct (about 12 mls each ingredient). But that also seems error prone, especially since after mixing, I guess the stuff can begin expanding very quickly. Measuring out 8 ml in each pour might not be easy if the stuff starts expanding before I've poured each part.
Any advice on how to use this foam is greatly appreciated.
How do you measure and mix such small amounts? It seems like a process that would be prone to error. If I'm trying for 8 mls of original liquid in the cup in which I am going to do the mixing, doesn't it seem like an ml or 2 could remain in the mixing cup when I do the pour? 2 mls out of 8 is a significant error, and then if I wanted to complete the casting, I'd be stuch trying to mix even smaller volumes!
I'm considering mixing the liquid for each of the 3 pieces and pouring a third into each, just so I can get the rations correct (about 12 mls each ingredient). But that also seems error prone, especially since after mixing, I guess the stuff can begin expanding very quickly. Measuring out 8 ml in each pour might not be easy if the stuff starts expanding before I've poured each part.
Any advice on how to use this foam is greatly appreciated.