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.