Emergency Sanding options - Tile Advice

[Filip]

I suddenly realise that I need smooth off a cut edge from PEI rating of 5 full bodied porcelain.
So what is the best option of a product that I can get from Screwfix or Toolstation. I have got on well with wet and dry paper before by hand but only on ceramic. Tool wise I have angle grinder, orbital sander, belt sander. Also I will be mitring one of these meeting edges and have a Marcrist CK65o for that

 

[One Day]

60 grit silicon carbide sanding disc on a soft velcro grinder pad

 

[Filip]

Oooh I actually already have this
The pad says semi flexible but seems quite stiff to me