I have some sections of 2" PVC and some Tee fittings that I need to join. On the Tee fittings, the main line is threaded and the outlets are smooth. How can I cut the threads in the straight sections to join with the threaded main line?
I see no reason why you should cut threads on a PVC pipe. It seems to me that this would be unnecessarily difficult and would weaken the pipe.
You should, instead, get a slip to thread adapter and glue it onto the pipe to thread it wherever you like. Any big-box hardware store or irrigation department should be able to provide this adapter.
Threaded fittings on PVC are intended to connect to existing, threaded NON-PVC connectors, such as galvanized pipe or fittings.
When connecting PVC to PVC it should all be glue joints without threads. You have the wrong type of fitting. Fittings are very cheap, much cheaper than adapters.
Need to thread PVC? Use schedule 80.
Schedule 40 PVC pipe is for socket fittings (slip glue) only; threading is not a recommended practice.
Schedule 80 PVC pipe can be threaded.
Use an NPT tap to make the threads.
I used a socket wrench with a ratchet handle for the tap wrench. Be sure to use the recommended drill bit size for the pilot hole.