I would appreciate any tips on mitering/fitting some pipe. Specifically I am working with 6" thin wall making a
3 piece 90, and a double 45 offset. Flame cut, stick welded I have a copy of The Pipefitters Handbook by Lindsay. and have used the tables and instructions for layout and have only so-so results. I also have WinMiter and printed out a 22.5 degree template for 6". It doesn't match the Lindsay tables when measured. The tables in lindsay show a 2.75" mark off and the winmiter printout are measureing 2.375". And neither one matches the layout I did directly on the pipe...where I had top, bottom and 90 deg marks, those are accurate and marked with felt tip.My direct layout was a paper strip wraped around, marked, folded double and again to get accurate marks.
The winmiter also has a curve on the narrow end I don't understand that.
Is making a paper template the prefered way to get a tight fit? It sure looks better than trying to draw out one on the pipe.
Also I'm using a Miller Tbolt ac/dc and using 3/23 6011 It look ok but is there a prefered rod/procedure for this type of work. I'm tacking and then working in sections. Cleaning slag each time ect.
The fitting will be on a water pump so I have to get a solid bead, no leaks. I will do a water test before hooking up.
Thank ED