If you slab, trim or shape agate, quartz, jasper, jade or petrified wood, the MK Diamond MK-303 4-inch (102mm) continuous rim lapidary blade is built to give you clean, smooth cuts while keeping valuable rough from turning into waste. The MK-303 is MK Diamond's professional lapidary blade, and its continuous rim is what lets it cut faster and last longer than notched rim or plated diamond blades in the same job.
Built for
- Rock hounds and hobby lapidaries who want a cleaner face on every slab before they polish
- Professional lapidary shops cutting rare or high-value material where every millimeter of rough counts
- Jewelry makers and cabochon cutters trimming agate, jasper, jade and quartz into blanks
- Fossil and petrified wood preparers who need a smooth, chip-resistant cut
- Schools, clubs and studios that run a small lapidary trim saw and need a dependable replacement blade
Why contractors and hobbyists pick this blade
Lapidary work rewards patience and punishes waste. A continuous rim keeps the blade face supported through the whole cut, so you see fewer chipped edges and less cleanup grinding afterward. Pair the blade with a water soluble coolant, let the diamond do the work, and avoid forcing the stone into the rim. When the session is over, dry the blade and wipe on an anti-rust lubricant so it is ready for the next project.
Choosing the right diameter matters. A 4-inch blade suits saws and trim saws built for that blade size, so confirm your saw's maximum blade diameter and arbor size before you order. Smaller blades such as this one are popular for trimming rough, squaring up slabs and cutting cabochon blanks, while larger MK-303 sizes handle bigger slabbing jobs. If you are not sure which size or arbor your saw needs, our team can help you match it.
Care is simple. Keep the coolant clean and flowing, avoid pinching the blade in the cut, and never store it wet. Treating the blade with an anti-rust lubricant after drying protects the steel core between projects and helps it stay true for the next cut.
Specifications
- Model: MK Diamond MK-303 professional lapidary blade, 4-inch (102mm) diameter
- Rim style: continuous rim, 5mm rim height
- Coolant: designed for use with a water soluble coolant
- Arbor: special arbors available on request, and stock arbors can be bushed down to smaller sizes. Please specify your arbor size when ordering
- Segmented rims: blades 16-inch and larger in the MK-303 line use segmented rims
- Storage: dry the blade and treat it with an anti-rust lubricant before storing
Frequently asked questions
What is the MK Diamond MK-303 blade used for?
It is a professional lapidary blade for cutting rare and valuable stones such as agate, quartz, petrified wood, jasper and jade when you want minimal waste and fast cutting.
Why choose a continuous rim blade?
A continuous rim produces a smoother cut and, according to MK Diamond, cuts faster and lasts longer than notched rim or plated diamond blades.
What coolant should I use?
The MK-303 is designed for use with a water soluble coolant.
Can I get a different arbor size?
Yes. Special arbors are available on request, and stock arbors can be bushed to smaller sizes. State the arbor you need when you order.
How should I store the blade?
Dry it thoroughly and apply an anti-rust lubricant before putting it away.
Use cases
Typical jobs: Slabbing and trimming agate, jasper and quartz, preparing petrified wood and jade, and cutting cabochon blanks on a lapidary saw.
Discount Cleaning Products is an authorized MK Diamond dealer based in the United States, with knowledgeable service if you need help matching a blade to your saw or arbor.
