I'm trying to make a Salamander who is also a Forge Master. I'm a little annoyed that they use different trades with roughly the exact same description. Can someone explain to me the difference between the Forge Master trade and the Armourer trade?

Scoates said:

I would assume that Armourer relates more to mortal gear while Forge Master clearly allows one to work on Astartes-grade equipment without penalty. Not sure if Forge Master was considered during the write-up of the Salamanders.

Alex