Quickly Modelling a Threaded and Rifled Barrel for Baking in Maya

Quickly modelling a threaded and rifled barrel for baking in Maya. I promised a friend a video of how I do threading ages ago, and I decided to put in an easy rifling effect to bake into the interior of a barrel as well. Neither the threading or rifling are accurate, however it would be fairly easy to use these techniques to create accurate threads or rifle grooves. Just note the "coils" of your helix for threading must be multiples of 3 to line up properly for duplication.

Quality might be shit because FRAPS doesn't record Windows anymore, so I used OBS and really don't know much about it.