I am using a diamond core bit to drill tea light holes in granite rock. I am not drilling through the granite, but am making stopped cuts.
I have used a 30mm diamond core bit to make the initial cut. Then used smaller core bits to drill out the core. The bottom of the hole is very rough - bumpy with the smaller core bit marks. I am hoping there is a way to smooth that all out.
How do I smooth out the bottom of the hole?