Do NOT click on any vaporpedia.com links. The domain has been compromised and will attempt to infect your system. See https://fuckcombustion.com/threads/warning-vaporpedia-com-has-been-compromised.54960/.
I made one a few years back .Had plans in hightimes.What you do is go to radioshack and get.
Plastic box with metal lid 6x3x2
120v to 12v transformer
momantary on button
small wire nuts
car cigarette lighter from auto parts store.You could cover burner with glass or stainless plate or whatever...
I got an email from him today he said he had them and was filling back orders and I could get one.It might seam pricey but a battery with charger are not cheap try getting a replacement for a drill.