On 5/31/2018 1:14 PM, Leon wrote:
....

Is that like the electrical conduit?Â* If so, certainly not stiff enough
to prevent the glued up from bowing.

Precisely...it's a nonsense thread from the git-go.

Nominal OD Sch 40 EMT OD
1/2" 0.840" 0.706"
3/4" 1.05" 0.922

so the EMT is almost a full 1/8" smaller diameter so clamps wouldn't
clamp even if the wall thickness weren't such that would simply collapse
it if did.

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