Originally Posted by Cecil Montague
Materials are always the limiting factor in capital construction, we will never be able to mine at a rate that matches our max production. This gets much much worse when you move to the bigger capitals like dreads, frieghters and rorqs.
You can suppliment what you mine with buying but that means either some poor sod has to sit in Jita 23/7 playing the 0.01isk game with buy orders or you could buy off of sell orders at which point you can kiss any profit you hoped to make goodbye. You will likely have to do this anyway with Zyd and Mega since they cannot be mined in highsec unless the wormhole can supply these.
Only rarely at best you can refine it from mission loot though.