Engraving Knife Core Box R4 x H8mm RCK-426
Solid Carbide
Core Box Insert Engraving Knife
Amana Tool RCK-426 is an authentic industrial solid carbide core box replacement insert engraving knife precision engineered for the In-Groove™ CNC insert engraving system, featuring a 5/32-inch radius, an 8mm (5/16") cutting height, and a manufacturer-specified plunge feed of 80 inches per minute.
Main Product Description
Amana Tool RCK-426 is the exact manufacturer code listed on its official product page. The verified technical specification grid dictates an exact 5/32-inch radius profile matched with an 8mm (5/16") cutting height. Constructed from high-performance industrial solid carbide, this insert knife produces crisp, clean profile outlines and delivers an operational lifespan extending up to twice as long as traditional solid carbide carving bits.
The In-Groove™ system architecture enables operators to rapidly exchange insert configurations while the primary steel tool holder remains securely mounted within the CNC spindle. This design strategy minimizes technical downtime, preserves strict reference zero coordinates, and maintains rigid cutting accuracy across high-volume production setups.
Official technical references list a dedicated plunge rate performance mark of 80 inches per minute. This industrial knife is designed as an interchangeable component sold individually; matching tool holder bodies must be acquired separately. Always clean insert seating faces during setup to maintain optimal geometric indexing.
Best Fit Applications
Product Highlights
In-Groove™ Interchangeability
Swap between 30 distinct profile configurations on the same tool body while maintaining exact CNC datum accuracy.
Industrial Solid Carbide
High-density micrograin construction produces flawlessly smooth finishes and holds sharp profiles twice as long as standalone bits.
Dedicated Core Box Geometry
Features a calibrated 5/32" (R4) radius paired with an 8mm height optimized for fluting, details, and sign lettering.
Compatibility & Installation Notes
Verify model number RCK-426 matches your application. This product is a replacement cutting insert and does not include the primary mechanical steel shank holder. It requires an official In-Groove™ CNC system tool body (RC-1075, RC-1076, RC-1077, or RC-1078) for safe operational deployment. Ensure the locking screw torque settings match system instructions, and clear away accumulated resin or chip dust from internal seating pockets before tightening the insert.
Precision Fluting and Clean Lettering via the In-Groove™ System
The Amana Tool RCK-426 brings production-grade solid carbide endurance to detail carving. By offering an exact 5/32" radius and 8mm height profile, it delivers reliable detailing performance across composite woods, plastics, and laminates.
Integrate this exact profile insert within your In-Groove™ workflow to optimize tool lifecycle, eliminate re-homing procedures, and boost automated throughput on your CNC layout.