93gc40, I've made those 25 over the span of 2 months. It only takes me about 15 minutes to mix a recipe from set-up to clean-up. But I am also taking care of sick family and a new puppy, so I really don't have that much time. And I don't have infinite numbers of syringes. I like to make sure they are dry before using them again and again. At some point, I may try to get into the weight style of mixing, but I don't have a balance or beakers for that yet