First of all, relax. Don't take what I'm about to post as judgemental, but understand our point of view here. You are still a kid. I'm pretty sure any mother doesn't want to listen to their young son whining about how they have a "knife related sickness". Use your head and think for a minute. Your ruining it for yourself by potentially "acting out". You are demonstrating (by your posts) that you are not capable of responsibly managing this sort of hobby. I might be off, but I'm going by your posts alone.
There you go again...refering to it as a "sickness". I'd be willing to be money that she doesn't give a flying rat's tail if the Cold Steel belt knife is a flying knife, a swimming knife, or a throwing knife. She knows a little more (non knife related) than you do. The majority of people that grow up don't get there by being numb above the neck, however there is an occassional exception.
There really aren't a lot of "camping" type moms out there. Cut her some slack. She is probably dealing with some stuff that is stressing her out, aside from working and whatever else she does to put a roof over your head, clothes on your back, and food in your stomach. Be grateful for what you have. So many kids these days have no clue what it takes to support a family on a single income,. Chill out already.
She might be seeing something that in your overeagerness are denying completely.
As far as a job is concerned, instead of seeing how many knives you can wring out of your mom, start earning some money. Start mowing lawns, clean up yards, walk dogs, shovel dog p00p. Try and see things from her perspective. There are tons of things you can do. Until you turn the ripe old age of 18, you should conceed to the wisdom of your mom. You'll thank her for it later.