QUOTE (Dumori @ Mar 11 2010, 09:38 PM)
Threading is borked you can keep threading till you hit the plus you need no worries. Really I then to house rule you pick the rating then roll for threading. Or that you can only roll it once per pass depending on my games power lvl and style.
You'd need to be pretty relaxed about RAW to allow a CF to be threaded multiple times at once. It doesn't specifically say you can't thread a threaded CF, but there is absolutely nothing saying or hinting that you can and if it is allowed the mechanics fall apart completely.
If you did allow it then you don't need your house rule at all. The TM simply says "I'd like this CF to be at maximum rating (Res x 2) with options x, y and z and I'll have it without any fading damage thanks". What actually happens is the TM threads his CF a first time, buying as many hits with his threading dice pool as can be bought off with his fading resistance dice pool (at 4 dice to 1 hit it would probably be only 1 or 2) then buys the damage off. As this took no time at all he then immediately threads it again for another autosoakable increase and so on until he's maxed it. He will lose two dice from his threading pool after the first time (since he has to sustain the CF*) but the penalty won't increase any further because he's only sustaining the one CF.
There, any CF from 0 to max whenever and as often as you like and that is why you aren't allowed to thread a threaded CF.
* You could go even more broken if you want to argue that as no time has elapsed the threaded CF can't be distracting him yet and waive the sustaining penalty.