Please explain to me how this system works. I've looked it up on Amazon and now I'm totally confused. You purchase the system (machine) in a certain size, or is it one size fits all buy additional dies and mats to go with the size machine you have. I can see that (maybe). Can you use larger dies with the machine or do you have to stick to the size that fits your machine? is it a hand crank, battery powered or electric? I've always cut everything out with rulers, templates, and rotary cutters. Had never considered an Accuquilt before today.