Hi guys, I've been anonymous for over 2 months ready g everything I can about pipe Smoking and I must add I've learned so much, now I must ask something that's been boggling me. When Smoking a pipe and letting burnout, how much much time can I let it alone, I'm used to Smoking and leave it a minute, but what would happen if I left it for hours, could I smoke the tobacco in the bowl or after certain hours it has to be thrown away??