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Posted by Ken Moffett on November 18, 2007, 8:35 am
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> I need to notch some tubing for welding...it's 1" OD, .083
> wall thickness, 6061. THe hole saw method isn't working
> very well, and I don't have a mill. Any ideas? THanks.
Dan,
There are two free computer programs that make paper templates
for cutting fishmouth notches on the ends of tubes:
Winmiter > http://home.tallships.ca/mspencer/winmiter.html
Tubemiter > http://www.ozhpv.org.au/shed/tubemiter.htm
Each has it's advantage. Winmiter allows for centerline offset.
Tubemiter includes wall thickness.
I just tape the paper around the tube and use a right angle
grinder to grind away the metal (and paper) right to the printed
line on the template. I even overlapped two templates to make a
double fishmouth to attache a vertical tube to the cross point
of an "X" base for an outdoors umbrella stand.
Ken
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> wall thickness, 6061. THe hole saw method isn't working
> very well, and I don't have a mill. Any ideas? THanks.