Is it safe to make your own mortar tube?
A friend and I are putting on a (legal) fireworks show tonight with commercial fireworks. I haven't finished my fireworks ignitor yet, so we're going to be lighting the fireworks with punks and running away. We're going to set up two "stations", one for each of us so one person can set something up while another sets something off. The problem is, the mortar set we bought only comes with one tube. I'm considering making another one out of PVC of the same size as the cardboard mortar tube, but this concern my friend. Is this unsafe, even if I stabilize the PVC and if it's the same size as the original tube?
7/6/10 UPDATE: I know it's past the fourth, but I'm still interested in kowing the answer.