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Deprecation warning

Sadly, but due to the lack of interest for EVA / Titan I will be deprecating it. Titan served us well, especially in the early days as an alternative for the lousy extruders printers came with.

Deprectaion means that this is the last release this variant got an update, next time it will be marked as obsolete. This means that it will stop receiving upgrades but will forever be available in the 2.4.0 version in it's submodule repository.



EVA / Titan is the oldest and in my opinion one of the best variants the one quite closest to my heart as it was the original and only extruder option for the first Easy-Mod - later was moved to a separate project which EVA become 😄
Since EVA 2.0.0 it does not require a unique front part, just a top (like BMG) which makes it not only easier to assemble but also to maintain. One can opt to use the press fit part if is lacking a groove mount adapter.
There is a PTFE tube going from the Titan to the hotend so it's not as "direct" as one could imagine but still the print quality is excellent (or at least not impeded by the carriage).

  • used by: 1.30 % (based on 2021-11 survey)
  • EVA spec: 2.4.0
  • authors: pkucmus
  • official

Custom Titan Tension Arm


The BOM contains my remix of the E3D Titan Flex Upgrade thing which improves the Titan filament path greatly.

My remix improves it's printability - print on the side where the spring is. No supports are needed.

You can ommit the SSX_tensioner_thing_2426505 part from the BOM if you plan on using the original arm.

Universal EVA Front

This drive uses the universal face, which means it's compatible with all hotends you can find in the Hotends section.

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 bottom_mgn12_short_duct yes
2 21.0 M3 Hex nut no
3 5.0 DIN 912 M3 12 mm no
4 2.0 DIN 912 M3 35 mm no
5 1.0 TriHorn Duct Default yes
6 1.0 back_corexy yes
7 2.0 tension_slider_9mm_belt_M5 yes
8 1.0 DIN 912 M3 25 mm no
9 2.0 DIN 912 M5 45 mm no
10 2.0 M5 Hex nut Nyloc no
11 1.0 5015 fan no
12 1.0 top_titan_mgn12 yes
13 2.0 DIN 912 M3 35 mm no
14 4.0 DIN 912 M3 10 mm no
15 4.0 M3 Hex nut no
16 1.0 E3D Titan no
17 1.0 SSX_tensioner_thing_2426505 yes
18 1.0 press fit yes
19 1.0 PTFE 40.3mm no
20 1.0 cable_holder yes
21 1.0 unversal_cable_mount yes
22 2.0 DIN 912 M3 10 mm no
23 1.0 universal_face yes
24 2.0 face_belt_grabber yes
25 4.0 DIN 912 M3 8 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