The message
from "." contains these words:

Seems clear enough to me. The clamping by the nut should tighten the
olive onto the pipe sufficiently to indent the pipe all the way round
- that's how they work.

/deform/ the pipe (sic) ?

That's right - deform the pipe. The olive will be pressed into the pipe,
deforming it in a ring all the way round.

What's wrong with that?

--
Skipweasel
Pay no attention to that man behind the curtain.