I have written a piece of software to help mold designers and engineers do their work. It is available for free for 30 days, download it, try it, tell me what you think.
I have many more ideas of calculations to add to it, if people actually find it useful. I use it regularly at work, and find that it saves me a great deal of time. It does calculations, has moldmaking material properties, and has checklists all in one location. No more searching for equations and properties. Think of the time it will save you.
Please try it, you are under NO OBLIGATION TO BUY IT AT ANY TIME.