The J-Head Lite V2 Ultimate Economy RepRap 3D Printer Hot End
thingiverse
The V2 Hot End, priced at $20, is a fully assembled, commercially viable option that combines elements of J-Head holder, Arcol heat sink, and MK7 hot end design. This innovative hot end brings 3D printing to the masses by pushing the boundaries of design and thermodynamics. It supports 1.75mm filament and successfully extrudes PLA, ABS, and other plastics, with an extruder temperature capability of up to 250°C. The Honeywell 100K ohm thermistor ensures accurate temperature readings, while the unique passive cooling system eliminates the need for a fan. Constructed from high-quality materials including PTFE rod, PTFE wire sleeving, PTFE barrel sleeving, PTFE heat shrink tubing, brass nozzle, ceramic insulation, stainless steel barrel, aluminum heater block, laser-cut oak mounting plate, Vishay 6.8ohm resistor, Honeywell 100k thermistor, and heat-resistant wiring, this hot end is designed for durability and precision. To assemble the hot end, you'll need Kapton tape, PTFE tape, Permatex anti-seize lubricant (optional), heat sink compound (optional), a vice grip, wrench, wire stripper, scissors, solder, soldering iron, 36 drill bit, 6mm drill bit, and a 10mm socket wrench bit. Instructions for assembly can be found in the provided video link, while a list of required tools and materials is detailed above. The process may take an hour or longer, and this complex assembly comes with a high risk of burns and electrocution. Safety gloves are recommended during handling of hot metal and live wires. Inexperienced users are advised not to attempt the assembly. Before starting, pre-treat the heater block, steel tube, and nozzle with acetone or laquer thinner to remove residual cutting oil and particles that may cause jamming. Following successful assembly, you'll need to adjust the PID settings and thermistor settings in your firmware for optimal performance. Additionally, if your fan is over-cooling the hot end, consider reducing fan speed or redirecting airflow away from the hot end.
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