The butcher paper idea is great! Thanks!

John

"Bob May" wrote in message
...
Sounds like you have most of the work figured out.
For marking the risers, one good way is to take some butcher paper
(fanfold
printer paper is also good for this) and wrap it at the angle you want
onto
the pipe and measure the length. Mark the paper at 1/11 of that distance
and you have the riser positions. Punch the pipe at those locations for a
marker and start welding.
For bending the ballister, just run your material through the bender and
weld afterwords as necessary to get the full length. Don't worry too much
about the rise as this will get fixed as you weld it in place although
keeping the angle about right will help. Tension springs show that the
material will go up right.

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Why isn't there an Ozone Hole at the NORTH Pole?