Grinding/shaping sharp ‘concrete’ edges???

[Laurence Harvey]

Grinding/shaping sharp ‘concrete’ edges???

My drive is block paved and part of it is a few inches higher than the surrounding area. The paving blocks in this particular area are retained by a lengths of concrete edging.

However, the outside edges of the concrete edging-strips are 90 degrees and are quite sharp as you’d imagine.

I’d like to round-off the sharp edges for 2 reasons;...they’d look aesthetically more pleasing and also they’d be easier on my car tyres!

Would a grinder and discs leave a decent smooth finish or would it tend to just shatter the edges?...any other solutions?

It’s donkeys years since I used an angle grinder and then it was only for cutting rather than sanding/shaping.

What to do?....all and any advice/suggestions gratefully received.

p.s. are these items from Toolstation ok to use for this job?

https://www.toolstation.com/dpc-stone-grinding-disc/p18118

https://www.toolstation.com/dewalt-dwe4016-gb-4-12-angle-grinder/p79333

 

[23vc]

Yeah, stone grinding disc, but it’ll wear down quick. A diamond cutting disc may also do it if you go gently on an angle and would last longer

 

[Laurence Harvey]

Yeah, stone grinding disc, but it’ll wear down quick. A diamond cutting disc may also do it if you go gently on an angle and would last longer

Thanks for that;...would both types of disc give a nice smooth finish?

 

[23vc]

You’re not going to get it mega smooth by eroding it with a grinder, you could potentially get a polisher on it after grinding (car polisher type with diamond pad) but you may not need to. Just start gently and get a feel for it

 

[cdbe]

You need to use a "diamond concrete grinding disc". I've had one for years but never got round to using it, but it's the tool for the job.

 

[^woody^]

You need a diamond cup wheel, not a normal flat disc.

 

[23vc]

Yeah fair point about the cup wheel, I kinda forgot about them and yes more suited and easier

 

[Laurence Harvey]

You need a diamond cup wheel, not a normal flat disc.

Thanks for that;...would these be suitable?

125mm or 115mm

https://www.screwfix.com/p/segmented-diamond-grinding-cup-125-x-22-2mm/4108v

https://www.amazon.co.uk/gp/product/B075D6WN3L/ref=ox_sc_act_title_1?smid=A3T2ZAM7SIQZ9A&psc=1

 

[^woody^]

I'd buy the cheaper one, size to fit your grinder.

 

[catlad]

They do make rounded and bullnose kerb edges!

 

[lostinthelight]

I would slice the corner off with a diamond cutting disc then finish with the grinding cup ,much less dust that way as the sliced off corner is in a lump and not gradually ground to powder.