The MK-200 is MK Diamond's Standard Grade continuous rim tile blade, and this is the 4-inch size, part number 151445. It is bought by tile setters, flooring crews and remodelers who need a clean edge on tile and dense floor materials. A continuous rim is what separates it from a segmented blade: there are no gaps in the cutting edge to catch the glaze and pop chips out of the face, which is why tilers reach for a continuous rim on porcelain and stone. It is a wet blade, and the water is doing two jobs at once, cooling the rim and flushing the slurry out of the kerf.
Use cases
- Porcelain and ceramic floor tile. Straight and plunge cuts with a clean face edge on a wet saw.
- Natural stone tile. Cutting marble, slate and other stone tile where a segmented blade would chip the edge.
- Dense floor materials. MK rates the MK-200 as excellent on dense floor materials, where a general purpose blade bogs.
- Small-format and mosaic work. The 4-inch size suits compact wet saws and detail cuts.
- Trim and finish cuts. Sizing border, bullnose and cut-in pieces where the edge will be visible.
Specifications
- Diameter: 4 inches (102 mm)
- Blade width (kerf): 0.060 inch
- Arbor: 20 mm - 5/8 inch
- Rim height: 8 mm
- Rim type: Continuous
- Grade: Standard
- Cutting method: Wet
- Application: Tile and stone
- MK part number: 151445
Fits
The 151445 ships with a 20 mm to 5/8 inch arbor and mounts on a wet saw that takes a 4-inch blade. MK notes that special arbors are available on request and that stock arbors can be bushed down to smaller sizes, which has to be specified at the time of order. Confirm your saw's blade capacity and arbor before ordering.
Frequently asked questions
Why a continuous rim instead of a segmented blade?
A segmented rim has gaps that hit the tile face edge-on and lift chips out of the glaze. A continuous rim keeps steady contact through the cut, which is what gives the smooth, chip-free edge tile work needs. Segmented blades cut faster but leave a rougher edge.
Can I run this blade dry?
No. The MK-200 is a wet-cutting blade. Running a wet blade dry overheats the rim, glazes the diamond and can warp the core. Make sure the saw's pump is moving water before the first cut.
My tiles are still chipping. What else should I check?
Three things tilers point to: a new blade often needs breaking in, so run a few cuts through offcuts first; set the blade depth to about the tile thickness plus 10 mm rather than full depth; and check the saw's spindle, because a slight wobble will chip tile no matter which blade is fitted.
Will it cut porcelain?
Yes. Porcelain is dense, which is exactly what MK describes this blade as being good at. Slow the feed rate down on porcelain and let the blade work rather than pushing it, and keep the water flowing.
Can the arbor be reduced to fit a smaller shaft?
MK states that stock arbors can be bushed to smaller sizes and that special arbors are available on request, but this has to be specified when the order is placed rather than afterwards.
MK Diamond Products is an American diamond-tool manufacturer whose family business traces back to 1868, when Joseph Musto founded the Musto Steam Marble Mill in San Francisco. Discount Cleaning Products is an authorized MK Diamond dealer and stocks MK blades and profiling tools alongside its surface preparation line, with US-based order support if you need help matching a blade to your saw.
