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  1. Do not tighten. Do not tighten.
    • Do not tighten.

  2. Secure the heater cartridge with an M3 set screw. Secure the heater cartridge with an M3 set screw.
    • Secure the heater cartridge with an M3 set screw.

  3. The thermistor is small and fragile. Be gentle with the legs. The thermistor bead is made of glass - don't crush it! Slide the glass-fiber high temperature sleeving onto the legs of the thermistor. Make sure to get the sleeving all the way right up against the glass bead.
    • The thermistor is small and fragile. Be gentle with the legs. The thermistor bead is made of glass - don't crush it!

    • Slide the glass-fiber high temperature sleeving onto the legs of the thermistor. Make sure to get the sleeving all the way right up against the glass bead.

  4. Bend thethermistor legs 90 degrees about 2-3mm behind the glass bead. The legs must be fully insulated next to the bead. Careful about the sleeving - it will want to slide away. Keep it right against the bead. The legs must be fully insulated next to the bead. Careful about the sleeving - it will want to slide away. Keep it right against the bead.
    • Bend thethermistor legs 90 degrees about 2-3mm behind the glass bead.

    • The legs must be fully insulated next to the bead. Careful about the sleeving - it will want to slide away. Keep it right against the bead.

  5. Due to the manufacturing process, washers often have slightly sharper edges on one of their sides. Make sure to have the smooth side facing away from the screw head - this way the smooth side will be against the sleeving and won't damage the insulation.
    • Due to the manufacturing process, washers often have slightly sharper edges on one of their sides.

    • Make sure to have the smooth side facing away from the screw head - this way the smooth side will be against the sleeving and won't damage the insulation.

    • M5x5 button head screw.

  6. Secure the thermistor in place with the buttonhead screw. Don't overtighten - you don't want to damage the insulation and short-circuit the thermistor.
    • Secure the thermistor in place with the buttonhead screw.

    • Don't overtighten - you don't want to damage the insulation and short-circuit the thermistor.

    • Visually check that the sleeving is insulating the legs of the thermistor right down to the bead.

    • If the legs make electrical contact with the block or each other your temperature readings will be incorrect and you risk overheating.

  7. Split the thin double wire about 5cm and slide heatshrink pieces on both legs.
    • Split the thin double wire about 5cm and slide heatshrink pieces on both legs.

    • Strip about 1.5cm (1/2'') of insulation from the wire ends. Use a wire stripper, knife, snips, scissors, fire, teeth, or a combination of these.

  8. Slide on two ferrules onto the thermistor legs.
    • Slide on two ferrules onto the thermistor legs.

  9. It does not matter which wire is which. The thermistor does not care about plus and minus. It does not matter which wire is which. The thermistor does not care about plus and minus.
    • It does not matter which wire is which. The thermistor does not care about plus and minus.

  10. Crimp the ferrules by firmly crushing them with a pair of vise grips/ pliers. You can use a fancy ferrule crimping tool if you have one, but it's not needed.
    • Crimp the ferrules by firmly crushing them with a pair of vise grips/ pliers.

    • You can use a fancy ferrule crimping tool if you have one, but it's not needed.

  11. Slide the heatshrink down over the now crushed ferrules and shrink into place with a heat source such as a soldering iron, hot air gun or a flame. Slide the heatshrink down over the now crushed ferrules and shrink into place with a heat source such as a soldering iron, hot air gun or a flame. Slide the heatshrink down over the now crushed ferrules and shrink into place with a heat source such as a soldering iron, hot air gun or a flame.
    • Slide the heatshrink down over the now crushed ferrules and shrink into place with a heat source such as a soldering iron, hot air gun or a flame.

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Filip Goc

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