SE300 Build Guide

Start with the heating cartridge and remove the two tubes covering the legs of the heating cartridge

Cut the legs of the heating cartridge to approximately the full length of the two crimp terminals included in the kit.

Bend one leg of the cartridge 90 degrees away from the other leg. This will seperate them giving room to attach the crimp terminals.

if you have a pair of crimps like the one in the picture, this will help. The first position near the tip of the crimps pictured are used in this step.

Place the frist crimp on one leg of the cartridge. The leg of the cartridge will go to the mid point of the crimp shown.

Use the crimp tool to crush the HALF of the crimp that the leg of the cartridge is in. DO NOT crimp the entire length of the crimp as the wire will go in the other half.

Repeat the process on the other leg of the cartridge so both crimps are attached to the heater cartridge.

Locate the two red insulated wires in the kit and strip off the ends as shown in the first picture approximately as long as half the crimp.

Insert the wires into the crimps and as in the step before use your crimp tool or pliers to crush the other half of the crimp attaching the wires to the crimp securely.

Locate the red silicone tube from the kit. Cut this tube in half so you have 2 pieces of equal length.

Use a screwdriver on one end of a tube to help open up one side. This will help get the tube over the crimps you just installed.

Slide one tube on one of the wires and work it down over the crimps until fully seated near the heater cartridge. Repeat this process on the other leg of the heater.

Bend the leg of the cartridge so they are back in line with the cartridge. Pic 3 shows a fully prepped heater cartridge.

The main body of the hotend will come finger tight. Do not use this as assembled.

First remove the nozzle (should only be on finger tight when taken from the kit). Then unscrew the heater block. Finally unscrew the heat break. You should have 4 seperate pieces.

Insert the heater cartridge into the heater block with the legs of the wires coming out the direction as shown. The wires should be coming out the same side as the set screw for the thermistor as shown in pic 2.

Tighten the screw to secure the heater cartridge in place. You can use a pair of pliers to hold the block in place while tightening the screw to secure the heater.

Get the thermistor from the kit. This is the brass cartridge with two white wires and a plug on it.

Insert the brass thermistor cartridge into the heater block as far as it will go. You may have to use the allen key provided to loosen or remove the set screw in order to insert the thermistor fully.

Use the supplied allen key to tighten the set screw. The screw only needs to be snugly secured, do not tighen as hard as you can, it is only needed to hold it in place so about 1/2 turn past snug will be adequate.

Locate the heat sink and heat break from the parts you just dissembled in the previous step.

Screw the heat break into the heat sink into the side with multiple closer fins as shown in pic 2.

The heat break has 2 flats on it used to tighten it. Use a 5/16 wrench or an adjustable wrench and securely tighten the heat break to the heat sink.

Locate the heater block, nozzle, and heatsink body you just assembled.

Screw the heat break and heatsink into the heater block watching the threads of the heat break until the end of the threads are just about even with the the heater block.

The heat sink screws into the heat block into the side opposite of the screws

Screw the nozzle into the heater block on the side with the screw and set screw as shown in pic 2.

Use an adjustable wrench or 6mm socket to tighten the nozzle. The nozzle tightens against the heat break to create a seal inside the heater block.

Locate the 25mm fan and fan shroud

Insert the fan into the fan shroud as shown in Pic 2. The label on the fan should face the curved parts of the fan shroud and the wires should be at the top as shown.

You will use this fan shroud with fan and the hotend for the next step.

Insert the fan shroud over the heat sink . There is a tab on the fan shroud that inserts into the first large cap between the fins on the heat sink. Press this tab fully into the heat sink.

Rotate the fan shroud so it is positioned in pic 2. The fan should be approximately at the corner of the heater block opposite of the thermistor wires.

Locate the SE300 PCB, knurled locking connector and small PTFE tube from the kit as shown in pic 3 for the next step.

Position the hotend on the hotened PCB as shown in pic1. The fan will be under the 10 pin connector, and the wires for the thermistor and heater will be on the side with the green connector and 2 white connectors.

The heater block should be in line with the part of the PCB with the words silk screened on them, with the heater screw being on the side under the electronic components for the pcb.

Holding the hotend to the pcb, flip it over and insert the PTFE tube and knurled finger screw into the hotend. Tighten this down with your fingers until it us JUST SNUG.

When you feel the knurled screw get snug, give it about 1/4 turn beyond snug ONLY, DO NOT OVERTIGHTEN!

with the knurled part snug, you can spin the collar of that section down to meet the PCB and tighten the assembly in place. This collar can be tightened securely and it will hold the whole assembly in place.

Plug the fan into the white connector labeled HeatFan P7 as shown in Pic 2

Plug the thermistor into the other white connector labled on the board as P6

Bend the heater wires up so they are in line with the green connector

Trim the wires approximately even with the bottom of the PCB as shown in Pic 2

Strip the ends of the wires approximately 3mm (a little less than the height of the green connector as you do not want the wires exposed when connected.

Insert one of the wires into the green terminal block as shown in Pic 1 ensuring that no stray wires are sticking out. Using a small screwdriver secure the wire into the block and tighten securely.

Insert the second wire as the previous again ensuring there are no stray strands of wires . Again using a small screwdriver secure the wire into the terminal block.

Twist the fan wires as shown in Pic 3 .

Bend the twisted fan wires behind the thermistor and heater wires to keep them out of the way.

Bend the thermistor wires behind the heater wires to keep them in place and out of the way.

Locate the 3 blower fans and the hotend platform as shown in Pic1.

Gently bend the wires out of the plastic tab they are held on by.

Be careful when removing the wires from the tab as pulling on them can pull them out of the fan and damage the fan!