So I managed to break off an M4 thread tap in a chunk of 7075 Aluminium and I’d like to get it out.
This is my first time milling steel, let alone boring but I set up a bore operation in HSMWorks:
- 1/8", 0.5" LOC, 2-flute uncoated C3D endmill (102? 112?)
- 5mm hole diameter
- 0.05mm pitch
- 200mm/min feed
- 6k RPM
I’ve so far got to ~6mm deep and it’s quite loud but it is cutting; a good chunk of the thread tap has been removed.
Does anyone have any suggestions on how I could improve this?
Before anyone asks, I have no clue what kind of steel this is. It came in this set, which seems to be Chinese.