On 21/11/2016 13:59, Dave Plowman (News) wrote:
In article ,
wrote:
On Monday, 21 November 2016 11:52:23 UTC, Jim GM4DHJ ... wrote:
wish I hadn't started taking the old 50g cold tank and the old CH
header tank out of the loft...what a mess ...pipe work and fittings
will be a good source of spares though......had to cut the 50 g tank
in half.....what a pain that was....

Yesterday I plastered in new socket boxes in the bedroom.

This morning I realised I'd forgotten to drill through for the spur to
the hall.

Drill a hole in one of the cutouts on the back of the box. Screw in a self
tapper. Pull out the cutout. Drill hole through wall.


Nah.

1.Use a small sharp screwdriver and a hammer. Gently tap the little
bit of metal at one side of the knock out where it isn't perforated.
When it's cut through lever the knock out out.

2. Use a metal drill to drill a hole in the back of the box. Throw the
metal drill away if it has been blunted by the masonry. Use a masonry
drill to extend the hole through the wall.

Bill