The credit for this lamp goes to a Croatian guy whose name I can't remember. He was at IU in Bloomington for a year or so; we took him to a few nice caves. I copied his carbide lamp because it worked so well.
As for the burner, I bought a very simple burner from ?imo years ago. I'm not sure what is available now. The only thing I saw on their website was the Petzl generator.
I've always wanted to scale the design up to an enormous lamp capable of putting out a 2 foot flame. It wouldn't really be all that hard. You could use large diameter pvc pipe......
Have fun- be careful, it really will explode. Don't use anything to hold the stoppers in. I kept the generator in a hip pack with only a velcro closure, no strap or buckle. That way it could pop the stoppers out when necessary!
Andrew