Here is what I am looking to do:
I would like to build the most powerful combustion cannon (within a reasonable budget) from home depot PVC piping. It is probably going to be a spray & pray model, because I enjoyed my last one much more than my metered propane effort.
Essentially, I am looking for ...

They were given to me by a friend who doesn't need them anymore, and I have no other use for them. So what you're saying is that building a hybrid off of one of the tanks would be more trouble than it's worth?

I already made one into a pneumatic gun, but my air compressor won't pump it over 100 psi ...

I was looking at that one last night. Do you think that is a good hybrid design to follow? Also, are burst discs reusable?

Hi all, I have been on this site quite a bit over the past couple of years but this is my first post.

I have been wanting to get into hybrid cannons (yes I have read the wiki) and was hoping some of you would have words of wisdom.

Additionally, I have two aluminum scuba tanks sitting around that ...