I can't believe we're still knocking this one around! If you're making anything that is a controlled explosive which requires a explosive certificate possess, to make it legally, its need to be <=100g NEQ and the individual needs to possess an explosive certificate. Simple as that.
On the otherside of the coin, if you manufacture a substance/device which isn't controlled (or doesn't require an explosive cert), you can make that legally up to 100g without an explosive cert. Unfortunately, in most cases, pyro based comps will require a certificate and its always recommended that an individual obtains one.
I know I've said it many times, but please read the guidance doc.
Edited by wayne, 02 March 2015 - 05:41 PM.