i think the short answer is yes you can get one of those diamond tipped cutters about a tenner and put it in your power drill. if it is ductile its a lot harder as its a bit more flexible and may crack
i am looking tov replace my ageing ravenheat 820/20 as its about done now, whats best i live in a mid terraced house if i bought another ravenheat modelwouldthe pipes be in the same places on the new boiler.
if i bought a boiler would i find a plumber to fit it and about how much would it cost...