I am just going to build s a single burner ,I just want to get parts for 2 just encase .Lowes didn't have the Tees or flare nipples, I'll go to to furgesons today and see what they carry.Have to go to Anch Fri. so I'll stop by bartel's.I don't really don't no the amounts yet that I need but if find a shell that will help.Going with copper then hose.I have some air tanks and propane tanks,I better do some reading on sizing if I just build a box for it.Will a 3/4'' coupling work instead of a thread protector , I should think it would.No play mates I made the eye differently this time, I cut a double bit lengthwise then in half ,rounded the end and welded a cap on it . not classic forging but fast, functional & frugal. need to get 3 made for something before winter.Later Al