How to cut coping

[pumabhoy]

I searched everywhere for L-shaped coping for the top of a garden wall but nowhere local had it. I'm now going to have to cut it at 45 degrees for the corners. What should I use to cut it? Angle grinder? Also how would I mark it as it is double weathered so is a ^ shape.
Cheers

 

[masona]

Is it a single or double wall thickness ?

 

[pumabhoy]

Single thickness. I am using 5.5 inch coping. Someone said a stihl saw is best but an angle grinder with brick cutting disk would also suffice.

 

[masona]

I remembered seeing a square coping type in your shape which you raise the corner slightly and butt the straight coving to it just underneath (like a castle effect). Any stone cutting disc will cut it. To cut a 45 degree angle, use a square underneath on the flat side then mark up on both side then draw a line on top.