Mini+ kit Original Prusa ? smart and compact 3D printing workhorse with all the bells and whistles you?re accustomed to when you buy an Original Prusa 3D printer. MINI+ will surprise you. It has a print volume of 18 cm (7?) cubed, removable spring steel sheets, ethernet, and it?s based on our brand new custom-made 32-bit Buddy mainboard with silent 2209 Trinamic drivers.