3d printing pens can;t compare to the exactness of a 3d printer, but instead give you the ability to create 3d printed objects in a free form mode. I think that it's rather annoying having to print with your the filament trailing behind you along your wrist and arm so i devised a plan. Now you can put your filament in a spool and load it into a spot holder located own your wrist. You also have filament guides located on the back of your palm. The two fingers that are actually there allow for contact along the buttons for a more interactive feel and you also have scrapers along those fingers for quick removal off hard surfaces.