They attempted to... At least in my lore. They had hidden production plants in the Segmentum Pacificus, made for Terra directly but were intercepted by a strong Deathwatch Force and huge Imperial Navy fleet elements. The Tau were crushed extremely and they probably will never try that again, but the reason why this was even possible was because the Black Crusade got only worse and because Armageddon still was not resolved. Armageddon actually lies in the north-east of Segmentum Sol, whereas Cadia is also not too far away from the Sol border.
Welcome to the new guys! Also, busy all day today until the PM, so I won't be able to reply for several hours yet. Just catching up on story in the meantime.
Yeah I remember you mentioning something about this long time ago. It's fine, I'll keep that in mind!
Yes. Colapse even explicitly said that in one of his posts that everything could be a bit asynchronous.
As I wrote Colapse already on Skype. Angles has RL trouble, so I bot Angelous in the meanwhile if cool with the GM and others.