Test performed by Mike Morace, Technical Tooling & Gage
Machining Process- Circle interpolate with a Ø.312, 4-flute carbide endmill
to finish a hole at Ø.375 and hold a finish of 20 microns or less.
High Pressure Coolant
Material: 304 SS
Standard Endmill Holder
Toolholder: HPI CAT40-EM0310-0250
Parts Machine: 16
Finish: 20 microns and higher
Added second operation to polish parts
Jet Blaster Holder
Toolholder: HPI CAT40-EM0310-0250-C
Parts Machine: 48
Finish: 20 microns or less
Omit secondary operation of polishing
Just think what an SX would have done in this application....