said by fizikz:I bought a galvanized nipple, but it barely goes in half a turn. I didn't try forcing it (yet). I'll try to clean the fitting's threads more with a wire brush.
I've had no luck finding a tap for rent. Even some plumbers don't have this equipment. A tool rental company first told me they had it, but turns out they have only dies for threading the outside, not taps for the inside... Exhausting.
here's a cheap one. »
www.amazon.com/CMT-1-1-1 ··· %2F2+tap ever since PVC came along, large pipe taps are harder to find..