Renkforce rf1000 ready assembled single extruder plug and play 3d printer renkforce 1231507 this print head adaptor allows you to turn your renkforce rf1000 3d printer into a millingengraving machine tool by replacing the extruder head with a dremel 3000 or 4000 multitoolthe modified printer is ideal for the fabrication of model based prototypes workpieces and 3d artwork including scale and architectural models and a wide range of hobby related tasks it can be used for various material