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Old 04.05.2011, 15:01
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Angle grinding

I've got some new paving slabs just delivered - 40cm x 40cm x 3.8cm. I'm going to have to cut some of them to get them to fit. Having never used one before, but being fairly ok with power tools, should I consider buying one and just doing it? Or is the kind of job to be left to professionals? The patio will be ~30m2. I've currently got 200 slabs.

If it is best to just leave to the professionals, can anyone recommend anyone?
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Old 04.05.2011, 15:04
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Re: Angle grinding

Just do it. It's easy.

Angle grinders can be bought cheaply. Get good discs, though, and make sure you wear safety goggles. This is one job that really does require goggles. Sand in the eyes at 150 km/h isn't fun.
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Old 04.05.2011, 15:06
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Re: Angle grinding

You don't use an angle grinder on them, you break them (like tiles) by scoring them, and then a hammer, and clean it up with a chisel.

http://www.ehow.com/how_6168584_cut-paving-slabs.html

Tom
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Old 04.05.2011, 15:08
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Re: Angle grinding

Or use both -- angle grinder to score, hammer and chisel to finish.

Remember, you generally don't see the cut surface once the slabs are laid, so the finish doesn't have to be perfect.
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Old 04.05.2011, 15:12
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Re: Angle grinding

Landi had BFO angle grinders for 89chf 2 weeks ago - smaller ones for 69 and 49chf - including a 5year guarantee

Probably all sold out - but I know a man with one
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Old 04.05.2011, 15:28
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Re: Angle grinding

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I've got some new paving slabs just delivered - 40cm x 40cm x 3.8cm. I'm going to have to cut some of them to get them to fit. Having never used one before, but being fairly ok with power tools, should I consider buying one and just doing it? Or is the kind of job to be left to professionals? The patio will be ~30m2. I've currently got 200 slabs.

If it is best to just leave to the professionals, can anyone recommend anyone?
Buy one some. Organise an EF event.



On a serious note, you want goggles, good gloves and a face mask as a minimum. Steel toecaps would be good too.
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Old 04.05.2011, 15:46
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Re: Angle grinding

For bigger slabs or tiles I would use one of these, really:

It just cuts right through them. With a grinder trying to get through a tile that thick you would spend all day. Another alternative could be a water-cooled saw. It depends a bit on the material of your slabs. Is it concrete or is it a stone material?
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Old 04.05.2011, 16:08
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Re: Angle grinding

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I've got some new paving slabs just delivered - 40cm x 40cm x 3.8cm. I'm going to have to cut some of them to get them to fit. Having never used one before, but being fairly ok with power tools, should I consider buying one and just doing it? Or is the kind of job to be left to professionals? The patio will be ~30m2. I've currently got 200 slabs.

If it is best to just leave to the professionals, can anyone recommend anyone?
I think Von Dutch is on the money....... those are pretty big slabs.


Personally,
The angle grinder might be the right idea, but it sounds a bit small for those pavements. I recommend that you don't buy either (angle or the cutter Von Dutch has above), you should RENT a 'drop saw' (the kind that you attach a water hose to) for the cutting.

It makes a mess, but the cut is cleaner and straighter.


I also recommend that you BACK YOURSELF and do the job yourself...... you know when you have that first cold beer in your hand admiring your handywork, that such a moment is priceless !!!
- you also pick up extra "Man" points from both the missus and your mates.

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Old 04.05.2011, 16:51
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Re: Angle grinding

I have a 2KW angle grinder with a 25cm diamond blade that cuts through most things.

Having said that if I was buying a tool for this job then the cutter mentioned would be very good. You just need to check it will really cut through your big slabs.

maybe you will also need an angle grinder for any fancy cutting work?
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Old 04.05.2011, 16:54
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Re: Angle grinding

The slabs in question are Gartenplatte Roccia Struktur - here. (Takes an age to load).

It won't all be just splitting. Some of the slabs will have to fitted around a circular drain cover.
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Old 04.05.2011, 17:01
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Re: Angle grinding

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The slabs in question are Gartenplatte Roccia Struktur - here. (Takes an age to load).

It won't all be just splitting. Some of the slabs will have to fitted around a circular drain cover.
I hope you ordered enough spares to account for the breakages when you attempt to cut them
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Old 04.05.2011, 17:12
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Re: Angle grinding

If anyone knows of a place to rent stuff, I found this website, they have the stone splitters, water cutters, angle grinders, anything you could possibly need. (except perhaps the bandages ;-) )

http://www.mietgeraete.ch/werkzeuge.php

And this one is closer to Basel: http://www.loxam.ch/de/mietgerate/Sg...trennmaschine/

Last edited by VonDutch; 04.05.2011 at 17:15. Reason: added extra website
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Old 04.05.2011, 18:01
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Re: Angle grinding

An angle grinder (even a small one) will cut through those slabs like a knife through butter. The will do it quickly. I know because I've done the same with granit, which is far harder, and much bigger slabs than 40cm x 40cm x 3.8cm.

Use a small angle grinder with a really good stone cutting disk to cut a groove, put the slab over a block of wood then hammer with a sledge. You will get a nice clean cut.

This is probably the cheapest option.

The cutter recommended by VonDutch would probably be quicker still, but like I say the angle grinder won't be slow and you can also cut 'L' shapes, although for this you'd probably have to cut both sides before hammering if using a small angle grinder.

The other advantage of the cutter recommended by VonDutch is it won't generate lots of dust. The angle grinder will. Angle grinders are also noisy.
If you use an angle grinder ALWAYS wear goggles/big glasses (I'm sure you would without my advice anyway). It is very dangerous not to.
If you use a big angle grinder be very careful. The gyroscopic forces are far larger and they can be difficult to control. They can also 'snatch' in the stone much more viciously than a small one, which again makes them difficult to control. Loosing control is naturally very dangerous. I would recommend using a smaller one for the slabs you're cutting. I hate the larger ones and use them only when I really have to.
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Old 04.05.2011, 18:03
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Re: Angle grinding

You can rent some serious man toys from OBI or BAU HAUS.

OBI in Basel has the mietprofi service http://www.obich.ch/ch/services/mark...ofi/index.html
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Old 04.05.2011, 18:38
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Re: Angle grinding

I paved all the way round my house, with a patio at the back - in excess of 250 slabs -dimension 50cmx50cmx4cm.
I bought a cheapish (Einhell < 100chufs) big angle grinder (sorry can't be bothered to check the size - but there are 2 common size disks, and this one uses the big ones).

It is essential to buy a good quality diamond tipped disk (half the price of the m/c for me), but it cuts through the stones with ease, and is well worth it.

Holes or curves are best done using a smaller angle grinder (you guessed it - the one that uses the small disks) - these are not expensive for basic non-profi make - but again with a diamond tipped disk.
Draw the outline and just score the surface, about half cm (more if you get away with it, without leaving cutting lines outside of the curve), top and bottom, then hammer and chisel to remove (slowly and gently).

Full protection for all facial orifices is essential - including ears, or you'll end up with church bells ringing the whole time.

I take it you're familiar with the actual procedure for laying the tiles?

Last edited by TiMow; 04.05.2011 at 18:48.
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Old 04.05.2011, 22:54
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Re: Angle grinding

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I take it you're familiar with the actual procedure for laying the tiles?
Yep - the theory anyway! But one of the forum regulars here has very kindly contacted me. He used to be builder, and is coming round on Saturday morning to advise.
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