Chris Bacon wrote:
Guy King wrote:
[tightening compression fittings]
Doesn't everyone use two spanners? Perhaps that's where all the people
who've been having compression joint fittings are going wrong, they're
just using one spanner!

Don't you *have* to use two spanners (or a spanner and a "grip", or
two pairs of Stillsons)?

Depends.
If it's a valve, or something else assymetric you can hold it with one hand,
and sort-of do it up with the other.