ChipLoad

ball nose bit profile illustrationSienci Labs

1/8" Ball End Mill

Type: ball nose bit · Diameter: 0.125" · Flutes: 2 · Shank: 0.125"

Starting points only, sourced from the manufacturers' own published data. Every machine differs: test in scrap, tune by ear. Neither ChipLoad nor the manufacturers are responsible for broken tools.

Published values, summarized per material and machine class. For the full CAM library (plunge, depth, stepover), download it from the manufacturer.

MaterialMachine classRPMFeed IPMChip load (in)NoteSource
Aluminumhobby-light1700042.520.00125 [Tested on Sienci LongMill MK2; converted from mm by ChipLoad]Sienci Labs
Aluminum - 3D Carvinghobby-light2700027.170.0005 [Tested on Sienci LongMill MK2; converted from mm by ChipLoad]Sienci Labs
Hardwoodhobby-light1700085.040.0025 [Tested on Sienci LongMill MK2; converted from mm by ChipLoad]Sienci Labs
Hardwood - 3D Carvinghobby-light2700081.10.0015 [Tested on Sienci LongMill MK2; converted from mm by ChipLoad]Sienci Labs
Plasticshobby-light1200072.050.003 [Tested on Sienci LongMill MK2; converted from mm by ChipLoad]Sienci Labs
Plastics - 3D Carvinghobby-light2700040.550.00075 [Tested on Sienci LongMill MK2; converted from mm by ChipLoad]Sienci Labs
Softwoodhobby-light1700085.040.0025 [Tested on Sienci LongMill MK2; converted from mm by ChipLoad]Sienci Labs
Softwood - 3D Carvinghobby-light2700081.10.0015 [Tested on Sienci LongMill MK2; converted from mm by ChipLoad]Sienci Labs

Retrieved 2026-10-16. Get the tool file from the manufacturer: Sienci Labs downloads