I have created a Hack-O-Matic Sheet that I feel is very, very easy to use. You simply enter your starting liquid to cut, your desired final strength, and your desired batch size. It gives you the amount of cutting fluid to use and you simply adjust the other ratios to equal out to 100%. This sheet was mostly forumulated from the orginal which I think was created from Jaaxx, I simply reverse engineered it to make it a little easier to use (at least I think it is). Let me know what you guys think!