JTMcC wrote:

"SteveB" wrote in message
news:dNPpb.1834$L77.1404@fed1read03...


"Karl Townsend" wrote in message
hlink.net...


I need a "T" made out of two six inch 1/8" wall thickness pipes.

I need a way to mark a chalk line on each pipe so I can cut it with a


torch


and then fit the two together and weld.

I did a layout like this in drafting class thirty years ago. Made each


piece


out of paper. Cut them out and wrapped around the pipe to mark the


lines.


I


don't remember much else about it.

Anyone know how this is done?

Karl





Go to a welding store and buy a "Wrap Around". There are different sizes.
There are instructions and marks on it that allow you to cut out the


desired


shape you need to get a repeatable pattern. I believe you can even order
one specific to your use from them.

Steve



A wraparound won't give you the ordinals to cut a branch.

JTMcC.









Just cut the main straight-through pipe so that you take out a 90 degree
"bite" from one side going in as far as its centre line.

Then cut the end of the branch pipe to a 90degree "V" to match the
"bite" in the main pipe.

Fit together, clamp and weld!

ave.