We made this drawing to have as a quick reference for when we were lathing all the internal geometry. It takes all the measurements taken from the MATLAB script while also having a ¼ outer diameter to ensure that our burn of 5 seconds will not melt the thrust chamber before it stops. We have 6 10-32 bolts going through the outside to our whole stack fits together nice and tight. Aside from that we also have a o-ring groove to ensure that flames do not shoot from the sides of our chamber while hot-firing.