The burners are usually different. Something that can burn for grilling or cooking often has a completely different pattern than what you want for a campfire effect, with long flames. And there's the issue of burning propane at a really fast clip. So yeah, that's why you see those rich yellow flames, which can also be a bit sooty. You might be able to modify one; report back if you find something cuz I'm curious about it too. I've seen some small ones, even for the table top. But all seem to use a lot of fuel.