Growing up with a dentist father who also owned a dental laboratory, I thought I knew everything about mixing plaster, hycrocal, etc.
It turns out that the ORDER of the mix can determine radically different results, even if you start out using the exact same ingredients and proportions. Check out what I found:
My (now 96-Year old) Dad always told me that the mixing order mattered immensely when it came to gypsum products but, until I saw that simple little video, I had no idea how wise had been his words.
Hope it helps.