ᐅ Tiling a Splash Guard at the Bathroom Sink Yourself

Hello!
I want to tile the space between the washbasin and the mirror in the bathroom myself (as a splash guard). I still have some leftover tiles from the shower that I would like to use. Unfortunately, these are "difficult" tiles. They are Equipe Ceramica Lanze tiles, each with a pointed edge. Kind of like an arrow pointing in two directions.
I need to cut off the pointed part to get a straight edge against the wall. This can only be done with limited precision. Something always goes wrong.

How can I create a neat finish on the bottom edge of a tiled wall? The trim profiles available for tiles are only suitable for the top edge. There is no reversed version.

You just need to use the right tool. An electric wet tile cutter with an angle guide should allow cuts accurate to 0.5mm (0.02 inches), as the final tiny measurement deviations will be lost in the grout joint. Otherwise, your local tile specialist can also grind and polish tile edges (at least ours could).

Is it this one? And placed vertically?

Draw a line with a pencil, score it with a tile cutter, and break it off using pliers or tap it off with a hammer. Tile cutters can usually be borrowed.

A few millimeters will be covered with a silicone sealant joint.

Yes, these are the tiles. I have a manual tile cutter here. Still, breaking along the scored line doesn’t come out as cleanly as it should. The tiles are quite thick; maybe that’s the reason?

As an amateur, achieving a perfectly clean result is quite rare, but it should be sufficient. As mentioned before, cut edges can be hidden behind a silicone joint. Are you planning for that, and it still isn’t enough? Plan B: cut in the middle? That should work better. Show us the tile cutter, maybe it’s a tool that can never work properly.

Would it be possible not to tile the entire surface, but to leave a border that would be jagged in this case? I’m not sure what the surface looks like, but maybe this is an idea for you so that you don’t have to cut the tiles at all.