Re: Do-it-yourself propane item
Push come to shove, you can always have someone custom machine one on a lathe. They can be handy when travelling to countries which have different thread sizes/pitches.
And as to filling. A good number of tanks have relief screws on them, near their nozzles. So that you can't overfill them. Just remember to open it, prior to filling the tank.
The Uncommon Thing, The Hard Thing, The Important Thing (in Life): Making Promises to Yourself, And Keeping Them.