What size slab saw blade do I need for my lapidary slab saw?

Match the blade diameter to your slab saw’s rated blade size. The most common lapidary sizes are 14" (350mm) and 18" (450mm). Always verify the bore size and arbor compatibility before ordering — most lapidary slab saws use a 1" bore.

What is the difference between sintered and segmented slab saw blades?

Sintered blades have a continuous diamond matrix that self-sharpens as it wears — ideal for hard, abrasive stone like agate, jasper, and petrified wood. Segmented blades have gaps between diamond segments for faster cutting and better coolant flow, suited for softer stone and granite.

What coolant should I use with a lapidary slab saw blade?

Oil-based coolant (mineral oil or commercial lapidary oil) is standard for slab saws. It lubricates the blade, flushes cuttings, and prevents rust on the blade core. Some operators use water-based coolant with a rust inhibitor additive for cleaner operation.

How do I know when to replace my slab saw blade?

Replace the blade when cut speed slows significantly, the blade wanders off line, or the segment height is worn down to within 2–3mm of the core. A glazed blade can sometimes be re-dressed on a dressing stick before replacement.

Can I use a slab saw blade on hard materials like granite and quartzite?

Yes — use a deep-segment sintered blade (18"–24") rated for hard stone. Run at the correct RPM for the blade diameter and maintain consistent coolant flow. Avoid forcing the feed rate — let the blade cut at its natural speed to maximize blade life.

Kolekcja: Slab Saw Blades

Slab Saw Blades – Diamond Blades for Lapidary Slab Saws

Professional diamond slab saw blades for cutting rough rock, boulders, and large stone specimens into workable slabs. Available in 10" to 24" diameters with sintered and segmented rim options — engineered for consistent performance on agate, jasper, petrified wood, granite, and hard abrasive stone.

🔥 Shop Slab Saw Blades

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Blade Specifications

Diameter	Type	Application	Notes
10" (250mm)	Sintered / Segmented	Small boulders, nodules, medium rough	Hobby and semi-pro slab saws
14" (350mm)	Sintered / Segmented	Medium boulders, agate, petrified wood	Most common lapidary slab saw size
18" (450mm)	Deep Sintered Segment	Large rough, granite, hard stone	Semi-pro to professional use
24" (600mm)	Industrial Sintered	Large boulders, quarry stone	High-volume production slabbing

Related Tools

Lapidary Slab Saws — 10"–24" slab saw machines to pair with these blades
Premium Sintered Diamond Saws — long-life sintered blades for hard abrasive stone and agate
Trim Saw Blades — 4"–6" blades for shaping slabs on trim saws after slabbing
Lapidary Trim Saws — compact saws for trimming and shaping cut slabs
Diamond Grinding Wheels — shape and pre-polish slabs after cutting
Expandable Drum Wheels — rubber drums for sanding belt mounting on cabbing machines
Machine Accessories & Parts — arbor adapters, flanges, and blade mounting hardware

Frequently Asked Questions

Q: What size slab saw blade do I need for my lapidary slab saw?
A: Match the blade diameter to your slab saw’s rated blade size. The most common lapidary sizes are 14" (350mm) and 18" (450mm). Always verify the bore size and arbor compatibility before ordering — most lapidary slab saws use a 1" bore.
Q: What is the difference between sintered and segmented slab saw blades?
A: Sintered blades have a continuous diamond matrix that self-sharpens as it wears — ideal for hard, abrasive stone like agate, jasper, and petrified wood. Segmented blades have gaps between diamond segments for faster cutting and better coolant flow, suited for softer stone and granite.
Q: What coolant should I use with a lapidary slab saw blade?
A: Oil-based coolant (mineral oil or commercial lapidary oil) is standard for slab saws. It lubricates the blade, flushes cuttings, and prevents rust on the blade core. Some operators use water-based coolant with a rust inhibitor additive for cleaner operation.
Q: How do I know when to replace my slab saw blade?
A: Replace the blade when cut speed slows significantly, the blade wanders off line, or the segment height is worn down to within 2–3mm of the core. A glazed blade can sometimes be re-dressed on a dressing stick before replacement.
Q: Can I use a slab saw blade on hard materials like granite and quartzite?
A: Yes — use a deep-segment sintered blade (18"–24") rated for hard stone. Run at the correct RPM for the blade diameter and maintain consistent coolant flow. Avoid forcing the feed rate — let the blade cut at its natural speed to maximize blade life.