Re: Muzzel break blew off on the first shot!
I have limited experience cutting threads on a lathe but those threads look familiar. If that was done on a lathe there are a number of reasons why the threads could be jacked up. Yes, I think those threads are screwed up.
(disclaimer: esoteric information in post)
When you setup a lathe to turn threads you calculate a feed rate for your carriage (device that holds your thread cutter). Your feedrate is based off your major diameter, TPI, and spindle speed. Once you have all of this setup you must engage the carriage. There is a dial that turns, usually with numbers 1-4 on it. To turn threads you position the cutter where you want threads to start and then (depending on your TPI) throw the carriage engagement handle on a even number, lets say 2. Then your carriage will slowly begin to cut threads til you disengage the carriage where you want threads to stop, move the carriage back to the starting position, advance the cutter in more and repeat. There is a potential problem that may arise is that when you engage the carriage again it must always be on the number 2, If you dont the carriage will start in the wrong place and cut your threads in a slightly different position. If you do this your threads will look like the above picture. You may be able to get your mating part to fit on your thread, but your thread engagement wont be nearly what it should be and it wont stay on long.
Then again Im not a machinist so take my observations with a grain of salt.
