Grinding disc for tidying mortar

What would work best for tidying up new mortar? I've made a bit of a dogs breakfast cementing some granite rocks together to make steps on a garden terrace and want to smooth the mortar up a bit and remove some bits of excess and generally make it look a bit less like i've had a fight with a mixer!

 

There’s a reasonable chance of making it look a bit worse Tom - stone grinding discs being somewhat savage.
I guess the mortar is set?
Consider sanding discs with a tough oxide grit or maybe a stiff wire mop in an angle grinder - after ensuring the mop is designed to be used in a grinder and definitely have eye protection.
John

 

Use a carbonundrum block and do it by hand

 

Piece of the granite rock would probably do it,if it doesnt the mix was too strong

 

Needle gun or a scabbler...

 

Silicon carbide abrasives work best on concrete and stone.

 

Post up an image.

 

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