Marble isn t that hard of a material that s why the grinder or belt sander will work.
Marble tiles are rough around edges.
The rougher the edge on the ceramic tile the lower the grit of sandpaper needed to smooth it out.
I didn t know how big the piece was.
The machined edges are often rough scratched or unfinished without the shine most people desire.
Use 60 or 80 grit for starters just to dull the edge or flatten the serrations if the tile has been nipped.
In this video i show you how to smooth out the rough edges of a cut tile.
But you might not be able to keep the nice straight machined edge.
Once the edge has been dulled work your way up to 200 grit sandpaper and then 400 grit sandpaper to polish the edge for maximum smoothness.
The tile is too easy to work with you just need to figure out who or how you will get this done.
Marble similar to granite comes in a large slab.
Granite marble or travertine tiles have rough edges that left exposed will leave your backsplash or counter project looking unpolished.
Sure you often can trim the edge of the stone with wood and grout or in the case of the common travertine possibly find expensive trim pieces that aren t what you really wanted.