Open Hardware
Assembly Instructions

Required Tools:

Torque wrench with 7mm crows foot adapter

18mm open end wrench

4.5mm open end wrench

1.5mm hex screwdriver

2mm hex screwdriver

Resbond 907TS Blue thread sealant

Required Parts:

1 Hexagon thermistor with wires cut to 195mm and male pins crimped on ends

1 Hexagon heater cartridge with wires cut to 180mm and male pins crimped on ends

1 ground wire for nozzle, red 24AWG wire cut to 210mm with ground lug on one end and male pin on other

1 Hexagon heater block

1 Hexagon heat sink

1 0.5mm Hexagon nozzle (should say 5 on side)

1 thermistor retention plate

1 M3x4mm set screw

1 M2x6 SCHS

1 star lock washer

2 M3x8 stainless steel button head screws

Shake the bottle of threadlock well to ensure it is well mixed.

Apply a generous coating of high temperature threadlock to the threaded portion of the heatsink, except for the last 2 threads as shown. This will ensure a good seal and that no locktight makes it's way down to the nozzle.

Install in the heater block tightly using a 4.5mm wrench and holding the heater block with a 18mm wrench.

There will be a significant amount of thread-lock on the top of the extruder block. Wipe off any that drips over the side, but leave the thread-lock around the heat-sink extension as a visual indication that there is thread lock on the threads.

Before the threadlock compound sets (within 5 minutes), rotate the heat-sink so that one of the points of the heat-sink faces the front and the set screw hole is somewhere in the back.

Lock the threaded extension into the heatsink using an M2x6 SCHS with a small amount of high temperature thread lock.

while holding the thermistor in place, slide the heater cartridge into the heater block so that the wires are coming out of the same face as the thermistor.

Secure heater cartridge and thermistor into the side of the heat block with a retention plate and an M3x6 BHCS.

Make sure that both leads of the thermistor are in the channel in the side of the heater block and not pinched against the flat face. One of the 2 black shield bits should be secured by the retention plate, the other should rest flush with the top of it.

Be sure that the retention plate is tightened seated completely flush against the block

Make sure that the front edge of the plate is parallel to the front face of the heater block.

Make sure that the retention plate is covering part of the heater cartridge, and that the wires are aligned vertically so that neither of the leads are touching the metal plate.

Attach ground lug to the left side of the heater block using an M3x6 BHCS and star lock washer between the ground lug and the heater block.

make sure that the wire is facing toward the heatsink so it can be routed with the other leads