Originally Posted by
RCaffin
Ooh, cheap and a bit nasty.
They may cut some softer materials. They may smear some others - plastic at high speed when they get hot for instance.
That price suggests the carbide is kinda brittle. Been there before - dead easy to break tips off.
0.1 mm tip - yeah, IF and only IF the tip is ground centred, your collets have minimal TIR, and the moon is in the right phase.
Cutting iron? Dreaming imho. Blunt in 5 mm, if not broken.
PCB cutters - similar comments all around.
Kyocera: good brand, very nice finish. You could also try Precise Bits.
V-tips in general: rather doubtful. I tried, for PCB tracks, but went with Precise Bits milling cutters in the end.
Cheers
Roger