let me re-iterate this is a great mod and I love being able to make the prosthetics,
so thanks for making this all

the materials at least are really OP and kind of ruin the excitement for getting things like power armor since clothing made from these mats is far better protection than any power armor.

NOTE: I'm kind of using this post to brain storm what more balanced values might be.So if I feel like figuring out the XML patching I'll do a mod, but...

first I would make the bench and the mats each have their own research project to get
then I'd maybe make the mats more expensive to make
finally I'd seriously tone down the stats of the materials
22k for max hp on the lowest tier is just OP not to mention 99k for the highest tier
So those would have to go down maybe 5k, 7k, 10k for that?
then for armor bonuses I'm not sure yet what would be "better than existing mats but not OP"
maybe 4 for nano, then 6 then 8?
and maybe double that for the insulation factors
then there's the beauty adjustment... 35 is way to much, maybe 11 to 15 depending on tier (gold I think has 10)

all that said how do these sound: nano, pico, atto
market value: 30,50,70
armor: 1.75, 2, 2.25?
insulation: double armor for now: 20,28,36
sharp dmg: 1.4, 1.55, 1.7
blunt dmg: 1.6, 1.75, 1.9
beauty: 11, 14, 19

what else should be tweaked?
oh yeah the cost to make...
the mats are somewhat expensive but maybe could be tweaked.. not sure about that.

also research, I'd make archotech mimicry just allow the bench then require researching both each material and each bulk material recipe... well maybe not the bulk but I'm going to try it. I thought about making something for the prosthetics but I think the bench should be usable somehow without all the other research but maybe even research for each item? or maybe not... maybe just for the advanced arms/legs?

Research:
archotech mimicry -> bench and prosthetics
nanomachines
bulk nanomachines
picomachines
bulk picomachines
attomachines
bulk attomachines

and last, I think, which is a "stretch goal", would be to try to figure out how to add hands and feet to the arms and legs so we could wear boots and gloves if we wanted to. But I don't think that can be done without code.