I'm making a dog bowl holder out of black metal piping. I have 4 legs with t pipes and a 4" double threaded pipe connecting the short distance between the 2 legs ends. However the 4" pipe piece that i'm trying to screw into the 2 T's, only screws into 1 t pipe, the other side doesn't seem to be threaded correctly or something. I have about 8 different double threaded pipe pieces and none of them work so it's not the individual piece. The double sided threading makes no sense if you can't actually use if for that purpose so I'm must be missing something. HELP? via /r/DIY https://ift.tt/2lriryJ
