To use this Voron 2.4 R2 functional parts set, first, assemble all the parts according to the included instructions. Make sure to select the right hotend parts and MCU brackets for your needs. When ordering, don't forget to tell us your preferred color for the accent parts. Remember, the functional parts are mainly for getting your first print going, but you won't have an enclosed printer for ABS right away. You can print external parts in PLA initially and switch to other materials once you have an enclosure. As for maintenance, keep the parts clean from dust and debris. Check the belts and chains regularly for tightness. If any part gets damaged, you can print a replacement using your printer once it's up and running.