For most jobs you need a manual tile cutter, not a wet saw. A manual cutter handles the straight cuts that make up the bulk of any tiling job, cheaply and cleanly. A wet saw (a water-cooled, diamond-blade electric saw) is the specialist tool you bring in for big porcelain, thick tiles, and the awkward cuts a manual cutter physically can't make. Buy the wrong way round and you'll either crack expensive tiles or spend on a machine you didn't need.
Here's how I decide, job by job.
Key Takeaways
- Manual cutter = most jobs. Fast, clean, no power or water — but straight cuts only.
- Wet saw = big/thick porcelain, diagonals, and L-shaped cuts a manual cutter can't make.
- An angle grinder with a diamond blade covers most awkward cuts for far less than a wet saw.
- Don't buy a wet saw for a splashback. Match the tool to the tile and the cuts.
- For a one-off big job, hire the wet saw rather than buy.
What each tool actually does
Manual tile cutter. A wheel scores a line across the glaze, then a breaking mechanism snaps the tile along it. Quick, quiet, no electricity, no water, no mess. The limit: it only does straight cuts, edge to edge, up to its rated length. For choosing one, see how to choose a tile cutter and the head-to-head in Sigma vs RUBI.
Wet saw. A diamond blade spins through the tile while water keeps it cool and holds the dust down. Because it grinds all the way through, it cuts what a manual cutter can't: very hard or thick porcelain, diagonal cuts, and notched or L-shaped cuts. The trade-off is cost, water and mess, noise, and the setup time every time you use it. The picks are in the best wet saw for tiling guide.
The decision tree
Work down this list. The first "yes" is your answer.
- Are you cutting large-format porcelain (roughly 90cm+ on a side) or very thick porcelain? → Wet saw. Past that, in my experience, a manual cutter won't reliably break it.
- Is it a herringbone or diagonal floor with loads of angled cuts? → Wet saw. Faster and cleaner than fighting a manual cutter on every cut.
- Lots of L-shaped cuts around sockets, pipes, and a shower valve? → Wet saw or an angle grinder. A manual cutter can't make an internal cut.
- Standard wall or floor tiles, mostly straight cuts? → Manual cutter, with an angle grinder for the few awkward ones. This is most bathrooms and kitchens.
The material matters as much as the size. Porcelain is harder and more brittle than ceramic, so it pushes you towards better kit — the full explanation is in porcelain vs ceramic tiles.
When a manual cutter is all you need
For the majority of domestic work, a good manual cutter plus an angle grinder is the whole answer:
- Standard ceramic and porcelain wall tiles — straight cuts on the cutter, done.
- Bathroom and kitchen floors in standard tile sizes.
- Splashbacks and small walls.
- The odd curved or L-cut handled by the grinder.
It's quicker to set up, there's no water everywhere, and it's far cheaper. Most tilers reach for the manual cutter first and only fire up the wet saw when the job demands it.
When you genuinely need a wet saw
Bring in the wet saw when:
- You're laying large-format porcelain — see the large format tile installation guide.
- The pattern is herringbone or diagonal, so most tiles get an angled cut.
- There are lots of complex cuts and you want them clean and consistent.
- The tile is thick natural stone or heavy porcelain a manual cutter can't snap.
For a single big job, hiring a wet saw for a weekend usually makes more sense than buying one that then sits in the garage.
What most DIYers should do
If you're tiling a normal bathroom or kitchen in standard-size tiles: buy a quality manual cutter and an angle grinder with a diamond blade. That combination handles the straight cuts and the awkward ones, costs a fraction of a wet saw, and covers the vast majority of what you'll meet.
Step up to a wet saw — bought or hired — only when the tile size, thickness, or pattern genuinely calls for it. Don't let a showroom talk you into a wet saw for a job a good manual cutter would walk.