You can submit mixed fashions in one file in at a time, as long as|so long as} the mixed objects fit inside the constraints of our print beds. It's a bit like asking "How many ways can you use a photocopier?" In theory, the only limit is your imagination. In apply, the limits are the accuracy of the mannequin from which you print, the precision of your printer, and the supplies you print with. Modern 3D printing was Stylus Pens invented about 25 years ago, nevertheless it's only really began to take off in the last decade.