Hey, all, thank you for your help and suggestions on the question I had about cutting large pipe squarely. I constructed two roller tables (using 2 3/8 inch pipe and some outer trailer bearings) and successfully supported a piece of about 0.300 inch wall, 24 inch diameter pipe, 14 feet long on them and scribed a mark that was near perfect, making the cut easy.
Next question: Is there an easy way to mark a pipe to cut to saddle to another? I had written a program about 3 years ago to print out a graph on paper that you could cut out and then wrap around the pipe to be notched so it would mark the pipe, but that's only good for pipe that's up to about 11 inches divided by pi or about 3.25 inches in diameter. Is there a fast, easy way to mark, say, a 16 inch piece of pipe so that it will saddle onto another piece of 16 inch pipe at 90 degrees (perpendicular to each other)? I'd like one piece of 16 inch pipe to be a complete cylinder and then have another meet it at a 90 degree angle and be notched out to fit approximately half way around the first piece. Is there an easy way to do that? The best I can think of is to have the piece I want to notch the end of laying on a stand horizontally and then have a support of some kind that would hold a vertical bar on a pivot that would swing side to side with the right radius so I could start cutting material off the 16 inch target pipe and check it with the radius tool. That seems awkward, I'd like to find something better.
Thank you for any suggestions and help.
--HC