"Tom Gardner" Mars@Tacks wrote in message
...

They will supply tubing 1.040" UD x .500" ID and want it bored to
11/16". I wonder if their original size of 1" OD x .75" id could be
stretched open to provide more holding power? That would eliminate
yhe boring op.

FWIW, 3/4" pipe and PVC electrical conduit is 1.050" OD by 0.824" ID.
-jsw