Here is the part. It's for a marine engine cooling system. I suppose he could have just bought a new one for around the same money.
![Image](http://i99.photobucket.com/albums/l309/tigmaster/P7300060.jpg)
It was an odd sized diameter, so I simply made one by annealing a section of larger pipe with a mapp torch. I like to use mapp on smaller bits because I can tell by the color of the flame where it contacts the metal when it is ready to quench, and it's a lot cheaper than wasting fuel from the OA setup, convenience etc. I've been shaping metal for a long time, even before I got into welding.
![Image](http://i99.photobucket.com/albums/l309/tigmaster/P7300062.jpg)
Yes, I cheated. Just cut thru to the center cutout with the band saw. I was trying to keep the part economically viable and every little bit helps. This essentially saves a trip to the drill press and then breaking out another cutting process and grinding in exchange for a small weld that would be on the way to welding the rest of it anyway.
![Image](http://i99.photobucket.com/albums/l309/tigmaster/P7300064.jpg)
The setup.
![Image](http://i99.photobucket.com/albums/l309/tigmaster/P7300065.jpg)
Welded inside and out. I welded it inside as well not so much for leakage, but friction wear and places for corrosion to hide. At any rate, it was completed in about 45 mins at a leisurely pace.
![Image](http://i99.photobucket.com/albums/l309/tigmaster/P7300069.jpg)