JoeJoe wrote:

Looking for one to cut a few (not many) relatively thin concrete slabs.
Never used or owned one before, so don't know what to look for. I thought
that a 4.5" would be ok (will it?), and just buy a big pack of stone cutting
disks from Screwfix - they look cheap enough.

Forget the stone cutting discs and go for a diamond blade. Faster cut,
less dust, and one will cut hundreds of slabs. With a big slab and
ordinary abrasive disks you may need more that one per slab!

Everything you need to know on cutting slabs:

http://www.pavingexpert.com/cut_in01.htm

(you can get diamond discs from eBay for peanuts)


About angle grinders:

http://www.diyfaq.org.uk/powertools/anglegrinder.htm


and about discs for them:

http://wiki.diyfaq.org.uk/index.php?..._Grinder_Discs


The ones below seem ok to me. Any recommendation? I suspect that once this
job is done I will not be using it for more than a couple of times a year.

With thin slabs you may be able to use a small grinder by making a
partial cut and then snapping the slab. If you want to make a full cut
(which sometimes you need to do on corners or notches etc) then a 230mm
machine is required.

If you want a "one off" tool, then even one of the cheapies will do
(although avoid the lowest of the low like Kinso (google this group to
see why!)). A £15 quid machine will see out 20 slabs.

http://www.screwfix.com/app/sfd/cat/...12131&ts=54887

Yup, lovely machine at the price, will last a lifetime... Nice
ergonomics as well, easy to use single handed when required. Will
survive being chocked up with masonry dust much better than the budget
tools.

http://www.screwfix.com/app/sfd/cat/...65546&id=50168

Not much going for it compared to the above.

http://www.screwfix.com/app/sfd/cat/...65546&id=87881
http://www.screwfix.com/app/sfd/cat/...65546&id=87881

Fine, but again pricey compared to the Bosch. As a rule I would say
Bosch have the edge on grinders (over DeWalt) anyway.

Any tip will be much appreciated.

Treat with respect - they can bite! Use a mask and face shield (the
visor type is good), plus ear defenders.

If you use a 230mm grinder then spend a bit more a slightly better
machine and hang on tight. I have had many years faithful service from a
2kW Hitachi grinder that came with a diamond disc. Cost about £75 IIRC.


--
Cheers,

John.

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