Dave Liquorice wrote:
On Fri, 26 Oct 2007 09:40:56 +0100, diy-newby wrote:

How on earth have they done that?

Not applied to much in the first place (cut nozzle to width of gap),
applied in one long non stop operation, possibly masking, using a
professional sealant (these tend to be thicker/stickier than the DIY
formulations but skin quicker) and probably the most important, lots of
learnt skill.


People tend to squeeze the trigger too much at the start. One light
squeeze is usually enough to bring the sealant up to the hole. Any more
and you start with excess pressure in the cartridge, which makes it
difficult to control