Imagine a space marine chapter which has lost contact with most of the Imperium (in particular, with Mars and other forge worlds) for centuries or even millenia, or a chapter which has fallen out with the Adeptus Mechanicus and can no longer send techmarines to it for training.

Assuming such a chapter had a well-staffed, knowledgeable Armoury to start with, is it possible for its techmarines to train new techmarines? Simply take the battle brothers who would normally be sent to Adeptus Mechanicus for training, and train them fully within the Armoury itself.

Assume the techmarines and the entire chapter are pragmatic enough to not care about the formal/ritualistic aspect of things, as long as the end result functions fully equivalently to a "standard" techmarine.

I've seen the related question on obscure chapters obtaining techmarines, but that (and its answer) are geared towards "how to get to the Adeptus Mechanicus when you normally can't", while I'm more interested in "what do you do when you really can't."

  • 1
    I look forward to hearing answers for this. If I had to guess, I'd say they could in extremis, but it would be interesting to know if that would result in divergent cults over time. Commented Jul 8, 2019 at 14:55
  • while the question posed is interesting, id like to comment about the situation. A chapter is super reliant on the mechanicum, even the carcharodons who are super disconecter have close ties to the mechanicum and have meetups with them. it is unsustainable for a chapter to exist without any connection to the mechanicum for long.
    – NinoM
    Commented Jul 9, 2019 at 6:52
  • "ritualistic aspect" appears to be almost the entirely of what a tech does in 40k. It's all superstitions based on a fundamental lack of understand how anything works, and a denial that AI is involved.
    – OrangeDog
    Commented Apr 20, 2021 at 13:36
  • If they know enough to do their job, I don't see how they couldn't pass that same knowledge on, assuming they were willing to give up Mechanicus secrets in that way.
    – Harabeck
    Commented Apr 20, 2021 at 19:00

2 Answers 2


What happens on Mars stays on Mars

I've never read about any Techmarine teaching a novice to become a full Techmarine. He would probably pass on small pieces of information to his brothers if necessary but not everything. They spend decades training, 40 or 50 years I believe, day-in, day-out.

I know they flat out refuse to talk about their time on Mars (or whatever forge world they train on, they can't all make it to Mars). Obviously whatever happens on Mars is serious business and they would not duplicate the process somewhere else, without the Mechanicus's permission.

For the sake of argument though:

Could they? Probably.

Would they? No.


I am catching up with the War for Badab and also the Carcharodons Astra and I remembered your question.

From the Fandom article of above mentioned chapter:

The Nomad-Predation pattern evolved in use by Space Marine Chapters and certain Rogue Trader fleets operating beyond the Imperium's boundaries for extended periods of time. It refers to an entirely self-contained force that can sustain itself without any Imperial support whatsoever.

So, if they don't have any support by the Imperium, that would also imply that they don't have support (in that case training) by the Adeptus Mechanicus for their Techmarines and existing Techmarines train the new ones in the proper rituals.

So, it certainly may not be a standard procedure for a Space Marine Chapter but it would seem that at the boundary of the Imperium, some rules might be ignored by Space Marines if needed.

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