Technical Specifications & Bench Methods

Specialized mold finishing across hardened steels and copper alloys.

Precision hand stoning isolates intricate ribs and complex shut-off angles without edge degradation. Chemical and mechanical EDM scale stripping restores parent steel structure before final optical lapping.

SPI A-1

Diamond Polish Standard

40x

Optical Verification

0.0001"

Dimensional Retention

4-Phase Bench Procedure

Systematic progression from macro profiling to optical mirror lapping.

01
02
03
04

Macro Stone Profiling

EDM Scale Removal

Diamond Suspension Lapping

Parting Line Integrity

Carbide and aluminum oxide stones eliminate machining marks and restore true geometry on core and cavity inserts.

Specialized chemical and mechanical stripping removes recast layers without altering critical shut-off angles.

Progressive micron-graded diamond compounds achieve specified SPI A-1 through D-3 surface finish requirements.

Meticulous hand finishing preserves sharp parting edges and prevents flash during high-pressure injection runs.

Quality Assurance

Strict parting line preservation and dimensional retention verified under 40x optical inspection.

Every cavity insert undergoes rigorous surface verification to meet micro-inch Ra tolerances prior to shipping from our Longmont facility.

Ready to verify finish classifications for your next tooling run?

Send tooling specs, mold steel grades, and target Ra values for direct evaluation.