wrote in message
oups.com...
Ed Sirett wrote:
On Sun, 27 Feb 2005 18:54:56 -0800, bigcat wrote:

A diamond bladed angle grinder is useful and make much less CI
dust and sparks.

having used diamond to cut ferrous, I found it almost useless. I
was
told the diamonds react with the iron and dissolve into it, making
diamond discs ineffective on iron and steel. And in fact,
hardening
the
steel a bit in the process.

I have a diamond disc (Screwfix 71994) which is going strong after
almost
a year say one job (some big some small per week average). I know it
cuts
through CI. If there is something better let me know but I know it
is
a
lot better than ordinary resin/abrasive cutting discs.

You got me wondering now. I was using a toolstation diamond disc to
cut
hss, and it was hopeless. Switched to screwfix cheap grit disc, that
worked no prob. Thats really all I know... maybe I should look at that
scrwefix blade. Toolstation ones are a lot cheaper, and work A1 on
concrete. Or perhaps its the CI vs HSS difference? No idea.

There are diamond discs and diamond discs. I have seen them here in
France for about 6 euro, haven't tried those but we had a couple of
different cheap ones. Almost useless, you would be better off with
ordinary stone/metal cutting disks. We also have a 80 euro disk which we
have had for ages and is still very good. Not sure when exactly my
husband uses it and when he chooses the ordinary ones though, sorry.

--
Holly, in France.
Holiday home in the Dordogne,
website: http://la-plaine.chez.tiscali.fr