3DSolex Printcore with Coreheating Nozzles. The 3DSolex Printcore is a drop-in replacement for the standard Print Core AA. We add 12 month guarantee*. The 3DSolex Printcore ships with tools for rapid nozzle change and are preprogrammed with the correct nozzle size, -except Printcore 4,7, and Black, which are all AA 0.40. Here you must change line width in Cura to reflect nozzle size. also layer height and speed if necessary. Every nozzle can now be easily replaced! Micro nozzles and Everlast Sapphire nozzles available. 12 Month Guarantee on electronics, heater, temp sensor. (Nozzles are consumables, but can now be changed easily and inexpensively!) 3DSolex Printcore EVERLAST Ruby Sapphire Nozzle Compatible – These are superhard nozzles, which print just as fast as the other non-steel nozzles, but will not be destroyed by abrasive filaments. Available Everlast are: 0.25-0.40-0.50-0.60-0.80-1.2mm The nozzles will not fit any other block. The 3DSolex Printcore can only use these nozzles. Mixing other nozzles/ blocks will destroy both block and nozzle. * Guarantee: The Core is classified as a consumable. This means that much like tires on a car it wears out quickly or slowly depending on use. However; we introduce a limited guarantee for our 3DSolex Printcore customers. Since we carefully verify every Printcore we offer the following guarantee: If you cannot yourself resolve Printcore problems you pay shipping to us + 49E, we fix ANY Printcore problems. While at it, we install a new PTFE and tracked return shipping (15E). How can you loose?