Trouble is that flexible mats don't last at all well.
I have a couple of 6" squares of a traditional solid fire proof material
which work really well.
I would recommend that you find some modern equivalent (Cape board IIRC)
trouble is that it might be hard to find an offcut.
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at www.diyfaq.org.uk
On Mon, 7 Jul 2003 08:32:34 +0100, "Jonathan@Home"
I find that it is important to play the flame around the joint a bit -
that way the mat behind doesn't receive a deadly dose of heat in one
Also make sure you use a flame size that is appropriate to the joint -
no need to light up a Saturn 5 rocket for a 15mm joint! My rule of
thumb is that the flame size should be no wider than the joint being
soldered, and in many cases smaller.
Hitting the joint with too much heat can be disastrous for a solder
joint - you want the solder to liquify but not evaporate :)
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