I'd like to cut into the soil pipe in the floor of my basement for the purpose of tying in a drain for a toilet and sink. The house and thus the pipe is 97 years old. The pipe is 6" and is about 3/8" thick walls. This is extra heavy pipe I think. I tried cutting it with an abrasive blade on a sawzall. Got about 10% of the way through after an hour. Forget about that.

Will one of those chain snap cutters work on this big extra heavy pipe? Are there any special techniques required when the pipe is extra heavy? Thanks.