The MK-415 is MK Diamond's supreme-grade continuous rim blade, and this is the 12-inch version with a .080-inch rim and a 1-inch arbor. It is a wet-cutting blade aimed squarely at porcelain and vitreous ceramic tile, the two materials most likely to chip and blow out the glaze when the wrong blade is on the saw. The continuous rim is the whole point: with no gullets to slap the edge of the tile, the blade shears rather than chops, and the cut comes off the saw with a clean line that does not need grinding before it goes against a wall or into a corner. MK builds the 415 series with a thicker core than its economy blades, which is what keeps a 12-inch blade running true on production work instead of wandering as it heats up.
Built for
Porcelain and vitreous tile on a large-format saw
Dense porcelain is where cheap blades show their limits, chipping the glaze on the exit side of the cut. A supreme-grade continuous rim is the standard answer, and the 12-inch diameter gives the reach for larger tile and longer rip cuts.
Production tile jobs where cut quality is the finish
On installs where cut edges stay visible at thresholds, outside corners and around fixtures, the edge that comes off the saw is the edge the customer sees. A thicker-core blade holds that quality across a full day rather than degrading after the first few boxes.
Natural stone and granite trim cuts
Continuous rim blades are used on stone for the same reason as on porcelain, to keep the arris clean. Wet cutting is required so the rim stays cool and the slurry is carried away.
Shops and rental fleets running 12-inch wet saws
The 1-inch arbor and 12-inch diameter match the common bench-style wet saws in tile shops, so one blade covers most of the machines on the floor.
Specifications
- Manufacturer: MK Diamond Products
- Series: MK-415 Supreme Grade
- Blade diameter: 12 inches
- Rim thickness: .080 inch
- Arbor: 1 inch
- Rim style: Continuous rim, super hi-rim
- Cutting method: Wet cutting only
- Part number: 155129
Frequently asked questions
Can the MK-415 be used dry?
No. The 415 series is a wet-cutting blade. Running it dry overheats the rim, cooks the bond and will destroy the blade quickly, and it also puts silica dust into the air that the water is there to control.
What is the difference between the MK-415 and a standard tile blade?
The 415 is MK's supreme grade, built with a thicker core and a taller continuous rim than the economy tiers. The practical result is straighter tracking on long cuts and a longer service life on dense porcelain, which is where standard blades tend to slow down and start chipping.
Will this fit my wet saw?
It needs a 12-inch blade capacity and a 1-inch arbor. Many bench wet saws in this size use a 1-inch shaft, but check yours before ordering, as some 10-inch and 7-inch saws use a 5/8-inch arbor and take a different MK-415 size.
Why is my porcelain still chipping?
The usual causes are feeding the tile too fast, a worn rim that has stopped cutting freely, or insufficient water reaching the blade. Slowing the feed at the exit end of the cut is the single biggest improvement most installers can make.
Discount Cleaning Products is an authorized dealer and stocks this part alongside the matching filters, bags, belts and accessories for the same machine, so a single order covers a full service visit. Orders are handled by a US-based team that works with these machines every day, and part-number questions are answered by people who can cross-check the fitment before you buy.
