I've taken an old ring burner from a camp stove and mounted into my brewing stand. I've plumbed for propane with iron pipe and valves, but I need to replace the orifice that came with the camp stove that was lost along the way.
Ideally it would simply be a short piece of iron pipe that I could connect directly at the burner. Drilling out a bolt the right size and length is a possibility, but I don't know what size I need.
New idea -
I have a 2" x 1/8" pipe nipple to connect to the burner now. I'm thinking I can clean up the cutting oil, fill the end with J-B Weld, file it flat and then drill it. But I'd still appreciate any thoughts or other ideas.