Generic Elves Upgrade Ceramic Heating Core CHC Hotend 24V Copper Heater Block Titanium Heatbreak Improved Nozzle Compatible Ender 3/Ender 3 V2 Pro/CR10/CR-10S/VORON 2.4 Hi-End Extruder J-Head

Klipper runs great on an old laptop, and you have operational control standing right at the printer. Best decision I made regarding my E3. Other amazing cheap upgrades. PEI build plate and magnetic sticker. Triangle lab BMG clone extruder. Bi-metal hot end. https://a.co/d/07tfoSMy Last I checked, it was cheapest on AliExpress Dual Z kit Many printable upgrades. I relocated the spool holder and power supply to lower the center of gravity. I have also printed bracing. I have an accelerometer, but haven't gotten it working yet. It will print a very clean PLA benchy in ~30 minutes without pushing the printer. I have never cranked it any faster because the quality rivals a 20-minute benchy from my P1S.