The best blade for cutting porcelain tile is a continuous-rim diamond blade made specifically for porcelain, matched to your saw. Porcelain is dense and hard, so a general-purpose or segmented blade will chip the glaze and wear out fast. Use a porcelain blade on a wet saw for most cuts, a 7" porcelain blade on a smaller saw or dry saw, and a 4-1/2" porcelain grinder blade for notches, holes and touch-ups.
Quick picks: porcelain blades by saw
| Saw | Blade size | Good picks we stock |
|---|---|---|
| 10" wet tile saw | 10" | Pearl P4 10" Porcelain, DeWalt XP4 10" Wet Porcelain, Montolit Perfetto, MK-225 Hot Dog |
| 7" wet saw or dry tile saw | 7" | Pearl P4 7", Pearl P2 Pro-V 7", iQ Q-Drive Hard Material for the iQ228 |
| Angle grinder | 4" to 4-1/2" | Rubi Premium Porcelain, Crowne Caviar, Crowne "Butter", Montolit Slim Cut for thin panels |
Browse every option in our diamond blades collection.
Why porcelain needs its own blade
Porcelain is fired hotter than ceramic, which makes it denser, harder and less porous. That's great for floors and showers, but it's tough on blades. A blade built for ceramic or masonry tends to grab, chip the glazed edge and glaze over (the diamonds polish smooth and stop cutting).
Porcelain blades solve this three ways:
- Continuous or mesh rim. No gaps in the rim means a smoother edge with less chipping.
- Softer bond. The metal holding the diamonds wears away faster, exposing fresh diamonds so the blade keeps cutting in hard material.
- Thin kerf. Less material removed means less vibration and a cleaner cut.
Wet or dry?
Wet cutting on a tile saw gives the cleanest edge and the longest blade life. Water cools the blade and carries away slurry. For a 10" saw like the DeWalt D24000, a wet porcelain blade is the standard setup.
Dry cutting is faster to set up and keeps water off finished floors. Dustless saws like the iQ228 pair a dry porcelain blade with built-in dust collection. On a grinder, use a blade rated for dry cutting and let it cool between long cuts.
How to get a chip-free cut
- Let the blade do the work. Feed slowly and steadily. Forcing porcelain is the fastest way to chip it.
- Glaze side up on a wet saw, so the blade enters through the finished face.
- Plunge or back-cut the last inch. On long rips, slow down at the end or flip and finish from the other side to stop the corner from blowing out.
- Dress the blade when it slows down. A few passes through a dressing stone or soft brick exposes fresh diamonds.
- Check the arbor and flange. A wobbling blade chips every cut. Make sure it's seated flat and tight.
The real installer debate: one blade or a dedicated porcelain blade?
The one-blade camp runs a quality all-purpose tile blade and swaps only when it wears out. Fewer blades on the truck, fewer changeovers, and it's fine for most ceramic and softer porcelain.
The dedicated camp keeps a porcelain-only blade on the saw for every porcelain job. They say the cleaner edges mean fewer trim pieces, less rubbing with a stone, and no reordering tile because of chipped cuts.
Where it lands: if you're cutting large format porcelain or anything with a visible factory edge, a dedicated porcelain blade pays for itself on the first job. For mixed ceramic work, a good all-purpose blade is fine.
Frequently asked questions
What's the best 7" blade for cutting porcelain on a wet saw? A continuous-rim porcelain blade like the Pearl P4 7" or Pearl P2 Pro-V. Match the arbor size to your saw.
What's the best grinder blade for porcelain? A 4-1/2" mesh or continuous-rim porcelain blade such as the Rubi Premium Porcelain or Crowne Caviar. Use it for notches, outlet cutouts and L-cuts.
Why does my blade chip porcelain? Usually a worn or glazed blade, feeding too fast, or the wrong blade type. Dress the blade first. If it still chips, switch to a porcelain-specific blade.
Can I use a tile cutter instead? For straight cuts, yes. A manual tile cutter scores and snaps porcelain cleanly and makes no dust. Most pros use a cutter for straight cuts and a saw or grinder for everything else.
Shop porcelain blades, tile saws and tile cutters at Contractors Direct. Pro pricing, fast shipping, and a team that cuts tile every day and can help you pick the right blade.