The MK-303 20-inch (508mm) segmented rim lapidary blade is a professional diamond blade for slicing rare and valuable stone when you cannot afford to waste material. MK Diamond built the MK-303 for rock and gem cutters who want a smoother cut, a longer-lasting blade, and faster cutting than notched-rim or plated diamond blades.
Use cases
- Slabbing large pieces of agate, quartz, petrified wood, jasper and jade on a wet lapidary saw
- Cutting valuable rough where every millimeter of kerf matters and waste has to stay low
- Production or hobby lapidary shops that want a smoother cut face with less post-cut grinding
- Replacing a notched-rim or plated blade with a longer-lasting segmented-rim diamond blade
This is a segmented rim blade. MK Diamond makes the MK-303 with a continuous rim from 4 to 14 inches and a segmented rim from 16 inches up, so the 20-inch size is in the segmented group with a 5mm rim height. Segmented-rim MK-303 blades come with a 1-inch arbor, and MK notes that stock arbors can be bushed to smaller sizes or special arbors can be made on request, so tell us at order time if your saw needs something different.
The MK-303 is designed to run wet with a water-soluble coolant. After use, dry the blade and treat it with an anti-rust lubricant before storing it, as MK recommends, so the steel core stays in good shape between jobs.
Specifications
- Model: MK Diamond MK-303 Professional Lapidary Blade
- Part number: 156730
- Diameter: 20 inch (508mm)
- Rim type: Segmented rim, 5mm rim height
- Width (thickness): .100 inch
- Arbor: 1 inch (can be bushed to smaller sizes)
- Use: Wet cutting with water-soluble coolant
Frequently asked questions
Is the MK-303 20-inch blade wet or dry?
It is made for wet use with a water-soluble coolant. Dry the blade and apply an anti-rust lubricant after use.
What arbor does part 156730 use?
Segmented-rim MK-303 blades have a 1-inch arbor. MK says stock arbors can be bushed to smaller sizes, and special arbors can be requested at the time of order.
What materials is the MK-303 meant for?
MK Diamond designed it for rare and valuable materials such as agate, quartz, petrified wood, jasper and jade, where speed of cut matters and waste must be kept to a minimum.
Can I use it on concrete or masonry?
No. The MK-303 is a lapidary blade for gem and rock cutting. MK Diamond sells separate masonry and concrete blades for construction work.
MK Diamond is a trusted US supplier of diamond blades and core bits, and Discount Cleaning Products is an authorized MK Diamond dealer with US-based customer service. If you are matching a product to your equipment, send us the size and arbor you need and we will confirm the right MK part number before you order.
