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Posted: Mon Apr 25, 2011 1:51 pm
by Paul Miller
Will a 230mm (9 inch) angle grinder with a diamond blade be suitable for accurately cutting Key Kerbs and large coping stones? I'm looking at either a Ryobi or JCB models in B&Q.
It shouldn't be any problem cutting 50mm blocks, but would a block splitter be easier / better ?
Cheers
Paul
Posted: Mon Apr 25, 2011 3:24 pm
by joydivision
Not sure about key curbs, never had to cut them. Cut many coping stones, concrete and stone and is fine.
A 9 inch grinder will cut in upto about 80mm.
What I would say is be careful of which brands you choose, I have had the cheapo b&q ones, the macalister ones, a hitachi one and neither lasted very long. The only model i buy now is the makita.
I have also heard of mates struggling to get a replacement with the cheaper brands when they wear out (within warrenty), with B&Q saying that certain brands are for DIY use only. So if your after heavy use, spend the money!
Also pay for a good blade, some are absolutlety awful!
HTH
Allan
Posted: Mon Apr 25, 2011 3:49 pm
by wantalc
joydivision i would have to dissagree with you about hitachi not being up to scratch.
i have had a 110 volt one for the last seven years and its never let me down and still going strong 
i must agree with every thing else you said tho..jcb electrickal stuff i would not touch with a bargepole
joydivision are you a ian curtis fan
Posted: Mon Apr 25, 2011 3:54 pm
by joydivision
wantalc wrote:joydivision i would have to dissagree with you about hitachi not being up to scratch.
i have had a 110 volt one for the last seven years and its never let me down and still going strong
i must agree with every thing else you said tho..jcb electrickal stuff i would not touch with a bargepole
joydivision are you a ian curtis fan
I bought the hitachi because of the good reputation and good plant, I must have had a bad one, lasted 6 months, happens with all brands from time to time i guess.
What makes you think ima curtis fan?
Indeed I am!
Allan
Posted: Mon Apr 25, 2011 4:10 pm
by wantalc
i am a big joydivision fan myself funny enough i have been on you tube this afternoon looking at some of there old stuff..
he died to young ian curtis the man is a legend
cheers
john
Posted: Mon Apr 25, 2011 7:25 pm
by rab1
try ebay, look for makita they make the best grinders/chop saws.
Posted: Tue Apr 26, 2011 12:34 pm
by seanandruby
I have a Hilti DC230S
Posted: Tue Apr 26, 2011 7:15 pm
by GB_Groundworks
IMHO the only professional way to cut concrete is with a petrol cut off saw aka stihl saw. As you can use water suppression to comply with health and safety regulations on dust.
110v great for metal work etc but not for concrete/stone
Posted: Tue Apr 26, 2011 9:00 pm
by ilovesettsonmondays
^^^^^ i agree
Posted: Tue Apr 26, 2011 10:06 pm
by Paul Miller
Thanks for your responses. I have no doubt that you are absolutely correct concerning the use of a Stihl saw. However, I am a DIY'er and cannot justify the cost of such a piece of equipment. OK, my local tool hire shop has them for £18.00 a day but as my project is likely to take months to complete I would be constantly having to re-hire it.
I was looking for a solution that would allow me to cut whenever the need arose and that was the reason I was considering an angle grinder with diamond wheel. I'm currently looking at the Makita GA9020S.
Joydivision said that it's worth paying for a good blade. Do I need to spend £100+ on a Makita blade, or would Erbauer, Norton or Marcrist blades at half the price do an equally good job?
Thanks for your help
Paul
Posted: Tue Apr 26, 2011 10:16 pm
by rab1
always use a face mask when cutting with a grinder (dry cut) or using a wet cut system as small particles of dust etc can still become attached to your lungs as per LOR & BB policy designed and thought out for the 8hr a day every day job man.
you dont do this all day every day so cut away with whatever you find easiest to use with a cheap mask and if the dust becomes to much stop. basically use your common sense.
Posted: Tue Apr 26, 2011 11:36 pm
by ilovesettsonmondays
how much is the grinder to buy
Posted: Wed Apr 27, 2011 12:28 am
by Paul Miller
The grinder is about £95.00
Posted: Wed Apr 27, 2011 8:30 am
by seanandruby
Paul Miller wrote:The grinder is about £95.00
Might be selling my hilti
Posted: Wed Apr 27, 2011 10:14 am
by GB_Groundworks
i did negate my statement by saying professional in reference to the two paver discussing 240v grinders