In article ,
John Rumm writes:
s--p--o--n--i--x wrote:

1. You must be competent. This means that things like jointing pipe, leak
detection,

Squirt copiuos amounts of fairly liquid around the joints and wait for
the bubbles

Wrong. You don't use neat liquid, you a soap solution of water/liquid.

Try neat fairly liquid and see what happens.

Note that many detergents contain salt and can be corrosive, so if using
one make sure you wash it off after.

Gas leak detector spray works much better too. It has a nice
capilliary action into the joint and then grows much clearer
frothy clumps of cuckcoo spit if there's a leak. Doesn't leave
any marks if you manage to spray it on the wall, drip it on
the floor, etc. LD-90 is one make I use which the local builders
merchant stocks.

--
Andrew Gabriel