Smoothing stardust

[penno]

Looking for a bit of advice. Fitting stardust at the mo, one corner of the boxing in around the toilet system is on an angle. Put a mitre in the tiles and looks good, however not really happy as the edges are sharpish where they meet. Best way to smooth the edges out?
Cheers in advance

 

[MARBLE_TONY]

Hand diamonds

 

[penno]

Go for around a 200 grit mate?

 

[MARBLE_TONY]

depends on the finish of the tile if even if its honed and you finish 200 may feel to rough so you may need to finish 400/800 polished and you will need to go up to 1500/3500. Be careful in the quality you buy the normal flat one are reasonable and are probably handy bit of kit go for a profiled diamond and you will be paying double!