Best Mortar Rake Bit for Angle Grinder to Tackle Brickwork and Stone
Choosing the right mortar rake bit for an angle grinder can dramatically improve efficiency when removing old mortar, brick, or stone. The following top-rated bits blend vacuum brazed diamonds and carbide technologies to deliver fast cutting, longer life, and cleaner joints. Each option below is designed for 5/8-11 thread angle grinders, with varying work lengths to fit tight spots or larger joints. This guide highlights their strengths, ideal applications, and what to consider when selecting the best mortar rake bit for your project.
| Product | Brand | Thread | Work Length | Grit |
|---|---|---|---|---|
| Diamond Mortar Raking Bit (5/16″ x 1″) | BRSCHNITT | 5/8-11 | 1″ | #40/50 |
| Fast Mortar Joint Cleaning – 6mm Cutter | PRODIAMANT | 5/8-11 | 1″ | Carbide edges |
| SHDIATOOL Diamond Mortar Raking Bit (2 Pack) | SHDIATOOL | 5/8-11 | 1″ and 4″ | 40/45 |
| FOCSTOL Diamond Mortar Raking Bit | FOCSTOL | 5/8-11 | 4-3/4″ | 40/45 |
| LEKOMESH Diamond Mortar Raking Bit | LEKOMESH | 5/8-11 | 1″ | 45/50 |
Diamond Mortar Raking Bit — BRSCHNITT (5/16″ x 1″)
The BRSCHNITT Diamond Mortar Raking Bit features a 5/8-11 thread and a compact 5/16-inch diameter with a 1-inch diamond workable length. Its vacuum brazed diamond exposure is designed to boost cutting efficiency and tool life, making it suitable for removing old mortar, repointing joints, or extracting damaged bricks and natural stone. The grit is configured for precise mortar removal without excessive material loss, enabling cleaner joints for re-pointing projects.
Fast Mortar Joint Cleaning – 6mm Cutter (PRODIAMANT)
The PRODIAMANT cutter uses three tungsten carbide edges for fast, clean mortar removal and long service life. This 5/8”-11 angle grinder accessory provides full-depth cleaning with a 26 mm working length, enabling thorough mortar removal without leaving residue. It is particularly effective for professional repointing, offering smooth cutting performance and reduced vibration, which helps maintain control during delicate joint work.
SHDIATOOL Diamond Mortar Raking Bit (Two Pack)
This two-pack includes 5/16-inch diameter bits with 1-inch and 4-inch work lengths, both with 5/8-11 threads. They leverage high-quality diamonds to maintain sharpness and enable longer service life, especially suitable for intricate or delicate mortar raking around brickwork and stone. The longer 4-inch option is ideal for behind pipes or larger mortar joints, expanding application versatility.
FOCSTOL Diamond Mortar Raking Bit
FOCSTOL integrates carbide inlays with a vacuum-brazed diamond head for superior positioning, faster stock removal, and sharper cutting edge. The 5/16″ diameter with a 4-3/4″ total length makes it well-suited for larger mortar joints and complex masonry tasks, including brick removal and tuck-pointing. The carbide-tipped design supports aggressive work while maintaining control in tight areas.
Diamond Mortar Raking Bit — BRSCHNITT (5/16″ x 4″)
This BRSCHNITT option extends the work length to 4 inches, maintaining a compact 5/16-inch diameter. The longer bit supports faster clearance of deeper joints while maintaining the same vacuum brazed diamond exposure for durability and efficiency. It is a strong choice for larger mortar spaces and situations requiring extended reach without sacrificing control.
LEKOMESH Diamond Mortar Raking Bit — 1″ Working Length
The LEKOMESH bit uses vacuum brazed diamonds for longer life and faster stock removal. The 1″ working length and 5/8-11 thread provide a balanced option for general mortar raking and brick work. It is designed to reduce vibration and improve control in challenging applications, including removing old mortar around delicate stones or bricks.
HIGHDRIL Diamond Mortar Raking Bit — 1″ Length
HIGHDRIL combines vacuum brazed diamonds with a practical 1″ working length and 5/8-11 thread. It is positioned for fast stock removal and reduced vibration, supporting applications from mortar raking to behind-pipe access. The 8 mm diameter offers precise control in tight joints, making it a versatile choice for many masonry renovation projects.
KURSTOL Diamond Mortar Raking Bit — 4″ Length
The KURSTOL unit provides a longer 4″ bit with a 5/8-11 thread and 100 mm diamond height for aggressive mortar removal and joint cleaning. It is well-suited for larger joints, stone work, and masonry projects requiring deeper reach. Vacuum brazed diamonds offer enhanced cutting performance and a longer service life compared to older electroplated alternatives.
Buying Guide: Key Purchase Considerations
- Thread compatibility: All listed options use 5/8-11 threads, standard for many angle grinders. Confirm your grinder’s arbor compatibility before purchasing.
- Work length vs. reach: Short bits (1″) are ideal for tight joints and precise finishing, while longer bits (4″ or more) cover larger areas but may require steadier handling.
- Diamond exposure and grit: Higher exposure generally improves cutting efficiency and longevity. Grit numbers (e.g., #40/45, #40/50) indicate aggressiveness and material removal speed.
- Bonding method: Vacuum brazed diamonds typically provide longer life and stable performance with less vibration than older tungsten or electroplated bits.
- Material compatibility: Bits are designed for mortar, brick, stone, and masonry. For delicate bricks or natural stone, choose finer grits and shorter, controllable lengths.
- Application scope: Some bits are optimized for rapid mortar removal, others for tuck-pointing or brick removal. Match the bit to your project’s depth and precision needs.
- Economy vs. longevity: Higher upfront cost may be offset by longer life and faster work. Consider how often you perform masonry work to determine value.
When selecting a mortar rake bit for an angle grinder, assess your typical projects, such as repointing, brick removal, or stone cleanup. A combination of shorter and longer bits can handle both tight joints and broader surfaces, ensuring you’re prepared for various job sites. Always wear appropriate safety gear, including eye protection and a dust mask, and follow manufacturer guidelines for maximum performance and safety.