I need to cut a notch in the end of sched 40 3.5 inch pipe to allow 2 inch pipe to pass through it. Available tools are reciprocating saw, drill press with bits up to 1 inch and bimetal hole saws, and cutting torch. What's the best way to do it? The notch needs to be snug because the 2 inch pipe will be welded to the 3.5 inch pipe using stick welding.
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