Buckrap Hot End Bow
Buckrap Hot End
Release status: working
Description | Buckrap Hot End
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Buckrap's Hot End
Here is a simple design Hot End.
Parts
Total costs under EUR15 / US$20:
- PTFE Tube 6mm (external diameter) 30-50 cm
- Brass nozzle 0.5mm extruder and M6 (purchased @ Camiel)
- M6 nut
- M6 brass coupling tube (photo)
- Nicrome wire
- Thermistor
- Perforated assembly strap 6mm holes (in the lower-right corner of the parts picture)
- Kapton tape 5mm (and optionally 10mm)
- Crimp on terminals 1mm
- Wire
Tools
- Pliers
- Wirecutter
- Crimping tool for terminals
- Scissors
- Spanner 10mm for M6 nut
- Multimeter
Step 1
- First push the M6 nut on PTFE tube and use the spanner turn it about 2 cm along tube. Then turn back the nut and remove it.
- Turn the tube into to coupling
- Turn the brass nozzle into the coupling
Step 2
- Tape the coupling and the brass nozzle with the Kapton tape
- Wind the Nicrome wire (Length about 28cm and check for about 6Ohm resistance)
- Tape over the Nicrome wires to hold in place
Step 3
- Insulate the thermistor leads with Kapton tape
Step 4
Take attention here
- Strip insulation from 2 wires for 7cm
- Strip insulation from 2 wires for 4cm
- Crimp the long ends to the Nicrome heater wire
- Cimp the short ends the termistor leads
- Insulate all wires individually with more Kapton tape
Step 5
- Tape the wires together and then tape them to the coupling
- Isulate the top of the coupling (thermal insulation)
Step 6
- Use perforated assembly strap for mounting there are no forces to contend with but it must not vibrate (Makerbot platform illustrated here)