SPH Ejector Drill-Head Research: What the Physical Tests Showed
Read the tested chip-mouth changes, minimum-flow comparison and transfer limits for a 30 mm ejector head in 42CrMo4+QT.
Additive Manufacturing
SPH-Optimized Ejector Heads: Research Results and Production Questions
Separate reported ejector-drill flow improvements from the compatibility, durability and commercial evidence needed for production.