On Fri, 11 Oct 2013 13:15:09 -0500, Leon lcb11211@swbelldotnet
I don't think that there is any way in the world that a pipe coupler
would break when using the pipes as pipe clamps. I have use this method
to make short clamps longer during my pipe clamp days and there was
never a reason to fear a break.

Your opinion is one I respect.