You don't use that mix for propellant. You plant your little Micromax seedlings in it. When they mature into full bushes, you collect the pods that hang off of them. Inside of each pod will be 6 Micromaxx motors. Geez, I thought that you S&T guys knew all that.
I forgot to put a launch lug on a boost glider. I used a spent MMX motor with the nozzle knocked out. I taped it to the pop pod because I couldn't open my CA.