Dark Eldar ressurrection techniques

as we are aware, dark eldar are able to mostly cheat death through their cloning techniques as long as they have the will to live. now my general musing is thus:
can they use the same technique with other eldar (craftworld, exodite, corsair etc) if they also have the will to live and hire the dark eldar's aid? obviously it wouldn't be in commorragh, but i could see ruthless craftworlders not quite wanting to be imprisoned in waystones just yet and still feeling alive being a valid argument for using this technique.
if an archon has a favourite pet (ie archon court member such as sslyth or slave, such as a captured chaos marine) would they be able to apply the same technique? they could most likely just get another, but some archons/haemonculus might not want to let go of their favourite toys.
just general meanderings really. thought i'd share a conundrum in my brain.

IIRC Vect pioneered the regaining vitality from torturing things thing. I believe (though I don't think it is directly stated) that the homunculi perfected it to the point where you could bring back other dark eldar. The whole process isn't detailed much or at all even, but it is inferred that this technique is unique to the dark eldar.
It is either biological if the no-psychers-exist codex cannon is to be accepted as truth (which is disputed in Path of the Renegade with a few lines and paragraphs). Or possibly be some form of a vestigial psychic ability that the dark eldar aren't consciously aware of, but have figured out how to exploit (my interpretation, not cannon, gleaned from some passages in Path of the Renegade).

Though I'm sure some homunculi or coven some where would probably try or is in the process of trying to branch the technique out to other species. Imagine what could be gained in notoriety/slaves/payments from the wych arenas alone. I'm sure a premium price would be payed for a way to convert boring/weak slaves into more dangerous and exciting foes.

Well... The process is explained a Bit in the Novel "Path of the renegade".

In the Soul Reaver Campaign book for Rogue trader it says that it can be used on other races, creatures, etc though is rarely done.

Usually reserved for "Legendary Foes" they face on the battlefield and wish to bring back for the Arena.

As I understood it in Path of the Renegade you can resurrect any eldar entity (don't think it would work on humans as their psyche is not strong enough) that died and whose soul went behind the veil.

As a general rule of thumb the longer dead the person, the more psychic engery (pain) is needed to resurrect the person. This explains why

Spoiler:

We all know that the Craft World Eldar keep their souls in Soul Stones, thus the souls don't go away behind the veil when they die. Thus it would not be possible to resurrect them using the Haemonculi's pain inducting technique.

a while ago Jes and Phil did an interview series regarding DE fluff and creation. Called the Dark Eldar round table, the process was very well explained

Here's the link

https://www.youtube.com/watch?v=-oatGPbCSIU

thats vid one, I think its explained in vid two. good watch.

Moving this to Background, please check where you start threads

my bad sky, i just wanted to get it down before i forgot. thanks for the responses too guys, think i'll work this into a bit of fluff i was working on. muchos gracias

I think it's also worth to note that the damnation of Eldar race is about their souls being consumed by Slaanesh. Though CWE counter this with their soulstones and DE with feeding on lesser souls but in "true death" (DE die, CWE break their soulstones) their souls will still be consumed by She-Who-Thirsts. DE resurrection technique involves leaving a portion of one's soul to the haemonculi so they can use it with a bodypart to resurrect the eldar with pain energy (codex p. 12). I guess this could also work on Craftwolders because their soul is preserved as a whole in the SS. Just grow a body and plant the soul into it.
My point is that one cannot be resurrected without atleast a portion of one's soul preserved by some way because otherwise it will be consumed by Slaanesh. Dunno how the pain energy resurrection can work on other species? I hate when they give us a mention without any detail!!!

What's this with that veil-thingy or did I miss something crucial with the Eldar fluff? So please correct me if I'm mistaken.

In the Path of the Renegade explains enough for someone to get an idea of how it's done, the longer they have been dead for the harder the process. Interesting bit about El'Uriaq's ressurection, the other Archon didn't fair so well when his Incubi found out that the process didn't go quite well!