Gentlemen, thanks for your responses regarding using dual processors. Sounds like it WILL crunch while I keep working, and that's what I'm after. Also, for particularly mold and cavity makers, what benefits does Mastercam Solids offer you, is modeling or toolpathing easier? We're considering that addition, too, if it does great things. Thanks, again. Goldie

Hi, Folks, Am looking into a new system and MC upgrade to 8. Am considering dual processors if an hour of crunching on one will leave the other free to keep working. *If you have such a setup, is it working well with larger programs (over 5 mb)? *If you have a newer, powerful system with a single processor, how much waiting time is there toolpathing large files (over 5 mb)? What speed system and how much memory are you running? Thanks, folks. Your tips will help me tremendously. Goldie