The MK Diamond MK-303 7-inch (178 mm) professional lapidary blade is made for cutting valuable, hard materials such as agate, quartz, petrified wood, jasper, and jade. At .050 inch thick with a continuous rim and a 5/8-inch arbor, it is the blade to reach for when cutting speed matters and so does saving as much of the stone as possible.
Built for
- Slabbing and trimming agate, quartz, jasper, and jade
- Cutting petrified wood and other hard, high-value rough
- Lapidary shops, rock hobbyists, and gem cutters running trim and slab saws
- Anyone who wants a smooth cut that wastes less material
Continuous or segmented rim
MK builds the MK-303 with a continuous rim on blades from 4 to 14 inch and a segmented rim on 16 inch and larger. This 7-inch blade has a continuous rim with a 5 mm rim height. MK says the MK-303 cuts smoother and faster and lasts longer than notched rim or plated blades.
Choosing thickness and arbor
This blade is .050 inch thick. MK offers the MK-303 in several thicknesses in the 6 to 10 inch sizes, so check the part number if you need a thinner or thicker blade for your saw. The stock arbor is 5/8 inch. MK notes that stock arbors can be bushed to smaller sizes, and special arbors are available on request.
Care and use
Use the blade with a water soluble coolant, as MK specifies for lapidary work. Dry the blade and coat it with an anti-rust lubricant before storing it. Match the blade to your saw speed: some rock hobbyists report good results on trim saws, while very high speed tile saws can dull a standard lapidary blade faster and call for more frequent dressing.
Specifications
- Brand: MK Diamond
- Model: MK-303 professional lapidary blade
- Diameter: 7 inch (178 mm)
- Thickness: .050 inch
- Arbor: 5/8 inch
- Rim: continuous, 5 mm rim height
- MK Diamond part number: 156722
Frequently asked questions
What is the MK-303 made to cut?
MK designs the MK-303 for valuable, hard materials such as agate, quartz, petrified wood, jasper, and jade.
Which coolant should I use?
MK specifies water soluble coolant for the MK-303. Dry the blade and coat it with anti-rust lubricant before storage.
Is the rim continuous or segmented?
This 7-inch blade has a continuous rim. MK uses continuous rims from 4 to 14 inch and segmented rims on 16 inch and larger.
Can the arbor be reduced?
Yes. Stock arbors can be bushed to smaller sizes, and special arbors are available on request from MK.
Discount Cleaning Products is an authorized dealer for MK Diamond, with US-based customer service to help you confirm size, arbor, and part number before you order.
