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Hemera

EVA / Hemera is still on EVA 2.3.0

Due to the reasons described bellow I had to omit upgrading Hemera to the newest spec, the main issue is the need for driving the main 35-40mm screws from the back. Sorry.

Possible deprecation warning

EVA / Hemera takes 50% of the work while being used by only 5.2% of the users, it's not fully to spec and in general Hemera is not a great fit for EVA. I don't want to be slowed down by it and my goal is to get rid of it from the platform.

This means that it will stop receiving upgrades but will forever be available in the 2.3.0 version in it's submodule repository.

preview

Description

E3D Hemera is an example of the front heavy EVAs (Aero was the same). The motor is huge and the whole extruder takes a lot of space so make sure to understand that the full print volume may not be accessible when using this EVA variant.

Why not bellow the rail?

I tried that on Aero - it did not work and was rendering it out of spec even more.

Hemera's motor needs to be put on quite early in the assembly process, remember to grab the right belt before putting it on.

  • used by: 5.20 % (based on 2021-11 survey)
  • EVA spec: 2.3.0
  • authors: pkucmus
  • official

Bill of materials

PTFE Tube lengths

I have split the lengths into two, the drive side and the hotend side. You need to sum the two lenghts from this and the hotend BOM you'd be using. (preferrably get more PTFE)

Do not cut the PTFE into two pieces

Item Quantity Name Printable
1 1.0 HEMERA-175-SINK_1_1_1_1 no
2 1.0 hemera_face yes
3 2.0 face_belt_grabber yes
4 4.0 DIN 912 M3 8 mm no
5 1.0 bottom_mgn12_hemera yes
6 1.0 Duct v2.1 Angled 13.2deg yes
7 1.0 hemera_probe_adapter yes
8 10.0 M3 Hex nut no
9 5.0 DIN 912 M3 10 mm no
10 3.0 DIN 912 M3 8 mm no
11 2.0 DIN 912 M3 16 mm no
12 2.0 DIN 912 M3 35 mm no
13 1.0 back_corexy yes
14 2.0 tension_slider_9mm_belt_M5 yes
15 10.0 M3 Hex nut no
16 1.0 DIN 912 M3 25 mm no
17 2.0 DIN 912 M5 45 mm no
18 2.0 M5 Hex nut Nyloc no
19 1.0 5015 fan no
20 1.0 top_mgn12 yes
21 2.0 DIN 912 M3 35 mm no
22 6.0 DIN 912 M3 10 mm no
23 1.0 cable_holder yes
24 1.0 unversal_cable_mount yes
25 3.0 DIN 912 M3 12 mm no

STEP files? CAD Link?

If you are looking for the CAD link to tamper with the design or to export the parts in formats other than STL you can find the links bellow.
Be warned though! The link directs to a live - bleeding edge - version of this particular EVA module - there is no promise it will be the same version as what you see above nor does it have to be the version Rat Rig provides.

I understand, please give me the link

CAD