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PostPosted: Wed May 30, 2018 3:24 pm 
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Hello

I need to make a straight cut along my driveway of 4cm depth (2cm tarmac, 2cm of foundations). I'm taking away some of the grass and laying a few flag stones to give more space when getting out of the car (need room for a pram!)

I have a Bosch pks 18 li cordless circular saw, if I bought the proper blade would the saw do the job? It only mentions cutting wood and metal in the manual but its a fairly small amount of work it needs to do.

Alternatively I could probably get the lend of a small angle grinder but it wouldn't cut deep enough, if I went this route, would a bolster and hammer finish the job?

Obviously the circular saw would be the easiest option, but I don't know if it would have enough power.

Any advice would be much appreciated.

Thanks

Adam


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PostPosted: Wed May 30, 2018 4:33 pm 
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It will knacker the circular saw blade quite quickly as it will heat up and loose the hardness. If you can borrow one, an angle grinder with a stone cutting disc would be best. Use a bit of wood as a guide to run it along to keep straight. They are not that pricey see https://www.toolstation.com/shop/p96949 and https://www.toolstation.com/shop/p89755

DWD

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PostPosted: Wed May 30, 2018 4:46 pm 
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In all honesty hire a petrol diamond asphalt saw (water cooled) otherwise as soon as you hit the tarmac its going gunge up the blade and engulf you in smoke

you may want to get a quote on the job tbh



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PostPosted: Wed May 30, 2018 5:16 pm 
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best is a corded 7 1/4" circular saw with a cheapo tarmac blade.
using your saw might get it gunked up with melting bits of asphalt .
or use a corded angle grinder with a cheap blade if the wheel can be safely fixed.
only use any of the machines with its guard. dont take them off to fit a blade.
mark your line and make very shallow say 5mm - 10mm cuts. dont go deep in one go.

thats how we constantly cut concrete with a chucked up masonry blade in a circ saw



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