How do I finely process/puree a large amount of chillies?
I assume you will be cooking the sauce. If this is the case, my recommendation is to cook the chillies first and puree them afterwards, as with traditional ljutenica or ajwar. In this case, you can either peel the skin off after charring it and then process the resulting soft flesh whichever way you want (it's very easy, leaves no chunks), or put them unskinned through a meat grinder with a special disk which separates the skins from the pureed flesh.