I have worked with this stuff before. It can be a real pain if you let it. We have no problem threading it, we bought some steel plates that go between the conduit and the jaws on the threader to prevent damage to the coating. The only problem we seem to be running into is the seals in our benders are starting blow. I think it is more of a benders age problem then a pvc coated rigid problem. But any ideas are more then welcome. Thanks