Hello there fellow taxidermists! I've been learning how to cast my own duck heads, and followed a tutorial on making my own molds (which turned out great as far as I know!). Since that went well, I went ahead and purchased Liqua-Cast from my supplier (BM Sports in Quebec) and am ready to actually cast my own heads, but the Liqua-Cast stuff I bought has no instructions on the bottles! Looking it up online, it says to vacuum and use a scale to weigh, but I don't have a vacuum or a scale... Do I need to vacuum it for it to work? Can I mix by volume instead of weight? Getting a scale isn't difficult, getting a vacuum I would assume more so. I was under the impression I just mix and pour.... If it makes any difference, the brand that needs vacuuming is "Castaldo", while my bottles say "Faunart" and "WASCO". Any help is greatly appreciated!