This is the fourth video in a series where I document building a KNSB-fueled rocket motor from scratch.This video will show the machining of the motor case and the forward closure.

**This video is for entertainment purposes only, don't try this at home.**

Most hardware (including complete motors) can be purchased from:https://lokiresearch.com/secure/store...

Boring Bar: https://www.mcmaster.com/3296A312/