1 Getting Started

Tools Required

Parts Required

Budaschnozzle
4.7 Ohm resistor
100 Kilo Ohm axial Honeywell thermistor
2x 20-22 AWG non-insulated wire ferrule 9681K15
2x 16 AWG non-insulated wire ferrule 9681k21
Wire Insulation:
- 4x PTFE Insulation 20 AWGMcMaster-Carr 5239K23, 18mm length- saved from existing Budaschnozzle
- 2x PTFE Insulation 13 AWGMcMaster-Carr 5239K25, 18mm length- saved from existing Budaschnozzle
- 2x PTFE Insulation 11 AWGMcMaster-Carr 5239K11, 18mm length- saved from existing Budaschnozzle
- Or Polyamide/Kapton Tape, only if existing PTFE sleeving is damaged or lost

2 Things To Remember

The RED wire pairs lead to the Heater Resistor and the ORANGE wire pairs go to the Thermistor.

Do not attempt to solder the connections for the hot end can reach temperatures high enough to fail- usually during a print.

Red and Orange

Power down the printer and disconnect from any USB connection prior to disassembly.
The heater resistor and thermistor are held on with non-insulated wire ferrules that crimp against the leads to form the connection. Do not attempt to solder the connections as the leads can get hot enough for the solder connection to fail.
Carefully slide the PTFE tubing insulation away from the existing crimp. Once exposed cut the crimp away from the wiring leading to the hot end connector, as close as possible to the crimp.
Make sure to save the 4-6 PTFE tubes to insulate the new component leads.
Once cut, carefully remove the component(s) from the heater block.

PTFE sleeving

Crimp exposed

Cut close to crimp

Procedure:

Slide a piece of the 20 AWG PTFE insulation over the 4.7 Ohm resistor leads.
Slide the 16 AWG ferrule flush with the PTFE insulation- you might have to hold it in place with your finger.
Slide the striped end of the red wire into the ferrule, the insulation of the wire should be flush with the ferrule
Crimp the ferrule with the wire crimper making sure that the wire or the resistor doesn't slide out.
Gently pull the wire and resistor to make sure that they are secured within the ferrule and make sure the two are making contact within the ferrule.
Slide a piece of the 11 AWG PTFE insulation over the ferrule making sure the insulation is centered over the ferrule.
Repeat this on the opposite side of the resistor.

Required Hardware

Insulation over the resistor with ferrule and red wire fed into it

Ferrule crimped with 11 AWG insulation centered over ferrule

Resistor crimped and properly insulated

Procedure:

Take the 100 Kilo Ohm axial thermistor and slide a piece of the 20 AWG PTFE insulation over it then take a 20-22 AWG ferrule and slide it flush with the PTFE insulation.
Slide the striped end of the orange wire into the ferrule, the insulation of the wire should be flush with the ferrule.
Crimp the ferrule with the wire crimper making sure that the wire or the resistor doesn't slide out.
Gently pull the wire and thermistor to make sure that they are secured within the ferrule and make sure the two are making contact within the ferrule.
Slide a piece of the 13 AWG PTFE insulation over the ferrule making sure the insulation is centered over the ferrule.
Repeat this on the other side of the thermistor, but make sure that you do not add another piece of 13 AWG PTFE insulation.

Thermsitor Hardware

Insulation over thermistor with ferrule and orange wire fed into it

Crimped ferrules with 13 AWG insulation on just one side

Thermistor:

Take the orange wire assembly and slide it through the small hole in the heater block, center the thermistor within the heater block. You may need to crimp the exposed ferrule extra for it to fit through the heater block.
Now on the orange wire assembly you can slide the second piece of insulation over the ferrule and center it, and you can now crimp on the second male terminal connector if needed.

Heater Resistor:

Take the red wire assembly and slide it through the large hole in the heater block, center the resistor within the heater block.

Route the wires:

Route one side of the orange wire through the same side cutout in the lower plate, then do the same to the other side.
Then with the mount plate oriented to the top of the assembly, route both orange wires through the left cutout in the upper plate, loop it around and down through the middle cutout and finally around and back up through the right cutout.
Route the red wires the same way as the orange wires, except slightly twist the wires as you route them through the cutouts as shown.
If you removed the connector pins from the connector housing insert the 4 male terminal connectors into the connector housing as shown, the clips on the male terminals should secure in the housing.
Hold the 4 wires under the terminal housing to prevent putting strain on the pins and gently twist all the wires together as shown.

Red and orange wires fed into heater block w/ thermistor and resistor centered