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02 - E3D Hemera Direct Assembly

Written By: Dan Rock (and 3 other contributors)
  • Comments: 36
  • Favorites: 0
  • Completions: 14

Difficulty

Moderate

Steps

21

Time Required

00:15:00

Sections

1

Flags

0

  1. Gather:

    • Gather:

    • x1 V6 heater block

    • x1 V6 1.75mm 0.4mm nozzle

    • x1 Hemera 1.75mm heatbreak

    Edit

  2. Orient the block so you have the side with only two holes visible. Screw in the heatbreak from the side with only two holes. Line up the top of the M6 thread section with the top of the heaterblock.

    • Orient the block so you have the side with only two holes visible.

    • Screw in the heatbreak from the side with only two holes.

    • Line up the top of the M6 thread section with the top of the heaterblock.

    Edit

  3. Screw in the nozzle from the side with 3 holes. Check the spacing is similar to the second picture.

    • Screw in the nozzle from the side with 3 holes.

    • Check the spacing is similar to the second picture.

    • This doesn't have to be super accurate as it will be adjusted later on.

    Edit

  4. Gather:

    • Gather:

    • x1 Assembled Hemera

    • x1 Heater block assembly

    Edit

  5. Apply thermal paste to the M4 section of thread

    • Apply thermal paste to the M4 section of thread

    • Only a small amount is required.

    Edit

  6. Screw the heater block assembly into the heatsink. The final orientation of the heater block should be the same as the second image.

    • Screw the heater block assembly into the heatsink.

    • The final orientation of the heater block should be the same as the second image.

    • If you are struggling to orient the heater block undo the nozzle slightly to position and then fasten the nozzle to hold it in place.

    Edit

  7. Gather:

    • Gather:

    • Hemera unit

    • PTFE tube

    • Collet

    Edit

  9. Locate the brass ring on the top side of Hemera. Press the collet into the brass ring

    • Locate the brass ring on the top side of Hemera.

    • Press the collet into the brass ring

    • If your Hemera came with the collet already inserted ignore this step.

    Edit

  10. Slide the PTFE tube into the collet as far as it will go.

    • Slide the PTFE tube into the collet as far as it will go.

    • Leave the PTFE at any length you deem appropriate to your setup. There isn't an ideal length here.

    Edit

  11. Gather:

    • Gather:

    • x1 Hemera Assembly

    • x1 Thermistor

    • x1 M3 Grub screw

    Edit

  12. Slide the thermistor into the hole without a slot. Place the M3 grub screw on the 1.5mm Allen key. Screw in the grub screw until it just touches the thermistor.

    • Slide the thermistor into the hole without a slot.

    • Place the M3 grub screw on the 1.5mm Allen key.

    • Screw in the grub screw until it just touches the thermistor.

    • Tighten M3 grub screw by an 1/8 of a turn.

    • Do not over tighten the screw. The stainless steel thermistor cartridge is relatively soft, and you might deform it if you over-tighten the screw.

    • Deformation of the cartridge can make it difficult to remove at a later date.

    • Cracking the glass bead in the ceramic potting can lead to incorrect temperature readings, or a short circuit.

    Edit

  13. Gather:

    • Gather:

    • x1 Hemera assembly

    • x1 M3 x 12 dome head screw

    • x1 Heater cartridge

    Edit

  14. Insert the heater cartridge into the heater block as shown. Fasten the heater cartridge with the M3x12 dome head screw.

    • Insert the heater cartridge into the heater block as shown.

    • Fasten the heater cartridge with the M3x12 dome head screw.

    • The heater block should deform slightly to clamp the heater cartridge.

    Edit

  15. Gather:

    • Gather:

    • x1 Hemera assembly

    • x1 Heatsink fan

    • x2 Self tapping screws

    • x1 PZ1 screw driver

    Edit

  16. Place the fan on the heatsink so that the sticker is facing towards the fins. Fasten the 2 self tapping screws with a PZ1 screw driver

    • Place the fan on the heatsink so that the sticker is facing towards the fins.

    • Fasten the 2 self tapping screws with a PZ1 screw driver

    • Be careful not to over tighten the fan as this can cause the casing to bow.

    Edit

  17. Connect the extension wire to the thermistor cartridge. Connect the extension wire to the thermistor cartridge.

    • Connect the extension wire to the thermistor cartridge.

    Edit

  18. All the parts assembled. All that's left to do is hot tighten.

    • All the parts assembled. All that's left to do is hot tighten.

    Edit

    • Hot-tightening is the last mechanical step before your Hemera is ready to go. Hot-tightening is essential to sealing the nozzle and heatbreak together to ensure that molten plastic cannot leak out of the hotend in use.

    • Using your printer's control software (or LCD screen), set the hotend temperature to 285°C. Allow the hotend to reach 285°C and wait one minute to allow all components to equalise in temperature.

    • Gently tighten the nozzle whilst holding the heater block still with a spanner and using a smaller 7mm spanner to tighten the nozzle. This will tighten the nozzle against the Heatbreak and ensure that your hotend does not leak.

    • You want to aim for 3Nm of torque on the hot nozzle—this is about as much pressure as you can apply with one finger on a small spanner.

    Edit

  20. To adjust the idler tension, rotate the thumbscrew at the top. Rotating clockwise (with the heat sink engraving facing you) increases filament tension. Rotating anticlockwise decreases filament tension.

    • To adjust the idler tension, rotate the thumbscrew at the top.

    • Rotating clockwise (with the heat sink engraving facing you) increases filament tension.

    • Rotating anticlockwise decreases filament tension.

    Edit

  21. Recommended starting idler lever tension.

    • Recommended starting idler lever tension.

    • The white spring block should be flush with the front face of the idler lever.

    • Further adjustment may be required dependant on material being used, for example flexible filaments may require additional tension.

    Edit

  22. Edit
Finish Line

14 other people completed this guide.

Author

with 3 other contributors

Dan Rock

Member since: 06/07/2018

21,496 Reputation

40 Guides authored

32 Comments

Add a comment

Greetings Dan,

I only issue I have with you instructions is, the correct orientation of the heater block and the cartridges.

Toward the heatsink Fan away from the fan or perpendicular to the fan?

Thanks foe the hard work,

Steve

Steve Donalson - Reply

Thank you for your feedback, the images have been retaken to show the recommended block orientation and wire exits.

Dan Rock -

Hello Dan,

It may be beneficial to include a section at the end that demonstrates the “hot” tightening process.

Tom

Thomas Smith - Reply

Is the collet clip included in the kit i can’t see in in any of the bags that came with my E3D Hemera Direct

Ashley Doyle - Reply

My collet was already installed in the Hemera Direct Kit out of the box.

Steven Sjosten -

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