On 2008-01-28 13:12:04 +0000, sm_jamieson said:

Which resin studs do you use ?
Simon.

Various ones.

Screwfix do an own brand zinc plated type.

Fischer do passivated ones similar to the yellow appearance of
Rawlbolts - also available from Screwfix.
They also do stainless steel if you want that.

All are in various lengths and sizes, or you can even buy 1 metre
lengths of rod and cut it - frankly I can't be bothered. There are
nuts and washers with the packs.

For resin, I started using the Fischer type with the screw in base that
has a mix of plain resin and resin with mortar. e.g. Screwfix 80157.
These are quite viable for small to medium projects.

I then had a project where I needed to fit over 200 fixings. At that
point, I invested in one of Fischer's special purpose guns (Screwfix
35237). The cartridges for this are about half the price of the screw
base ones, so it was worth it.

There are also resin sleeves. These are used if you are fixing into a
hollow block or a brick with holes through the centre. They retain
the resin around the stud.

The important thing is to make sure that the hole is clean of dust.
Needless to say, Fischer sell some gizmos to do this. I found that
a vacuum cleaner and/or an air jet is perfectly adequate.