In-Groove™ System Fit
Seamless interchangeability with standard RC-1075, RC-1076, RC-1077, and RC-1078 tool bodies to maximize CNC versatility.


Amana Tool RCK-414 is the exact 1/8-inch radius corner round replacement insert knife engineered for the In-Groove™ CNC Insert Engraving System. It features an 8mm cutting height, solid carbide construction, and an optimized 80 IPM plunge feed rate.
A single-flute solid carbide replaceable insert knife for detail engraving and profile edge-softening. The exact official Tool No. is RCK-414; its dedicated page sits within the In-Groove™ CNC system catalog.
Exclusively compatible with Amana Tool In-Groove™ engraving bodies, including tool numbers RC-1075 (1/4" shank), RC-1076 (1/2" shank), RC-1077 (6mm shank), and RC-1078 (12mm shank). Do not mount in non-approved bodies.
Amana Tool RCK-414 is the exact replacement insert knife shown on its dedicated official product page. The specification block establishes a verified 1/8-inch radius (R3.2mm), an 8mm cutting height (B), a 0.072-inch tip width, and a recommended plunge feed rate of 80 inches per minute. Constructed entirely from industrial-grade solid carbide, this insert yields clean edge finishes and prolonged service spans.
Amana Tool designs this corner round profile explicitly for the In-Groove™ CNC Insert Engraving System. It allows operators to perform detailed profiling, decorative signmaking, lettering, and precise outer-edge softening without purchasing entirely separate dedicated-profile solid tools. The single-flute geometry ensures efficient material clearing across diverse workpiece selections.
The official documentation rates this profile for hardwoods, softwoods, MDF, laminates, and extensive plastic configurations like acrylic, HDPE, and solid surfaces. Please note that while some V-tip elements in the In-Groove system handle aluminum etching, Amana Tool specifies that corner round inserts like the RCK-414 are not engineered for non-ferrous metal cutting.
Technical Specifications
Seamless interchangeability with standard RC-1075, RC-1076, RC-1077, and RC-1078 tool bodies to maximize CNC versatility.
Complete solid carbide construction maintains sharp cutting edge geometry across abrasive composites and dense plastics.
Engineered for low vibration and controlled 80 IPM plunge rates to form crisp 3.2mm radiused profiles without burning.
Verify that the tool body is completely clear of debris before inserting the RCK-414 knife. This is a single replacement insert knife; tool bodies (such as RC-1075 or RC-1076) must be purchased separately. Ensure all retention screws are torqued down evenly per Amana Tool specification. While the In-Groove system handles diverse media, the RCK-414 corner round profile is explicitly restricted from non-ferrous metals. Follow standard CNC personal safety requirements and machine parameters.
The Amana Tool RCK-414 Insert Knife pairs a 1/8-inch radius with an 8mm cutting height, a 0.072-inch tip width, and a solid carbide edge.
Its official compatibility index supports rapid tool changes in verified In-Groove™ engraving bodies, yielding reliable production results across hardwood, MDF, polymers, and advanced non-metallic sign panels.