Along the lines of a make-your-own pottery shop or a woodworking studio, engineer Rick Beddoe is today hosting the grand opening of a 3D printing retail shop that's part Fab Lab and part design company. Steam Factory houses more than a dozen 3D printers and offers a membership subscription model (up to $40 per month) to customers to come in and get hands-on help 3D printing, scanning, and designing anything from prototypes to household gadgets.