The New Machine

[Jonathan]

Assuming a slot 2000rpm with 2mm DOC at 200mm/min sounds reasonable (as long as there is some cutting fluid/coolant around), however the tool deflection is borderline so it may not get a good finish. I would use that then at the end do a finishing pass taking say 0.2mm off all round at full depth.

Since the tool is 2 flute use half the feed for plunging (i.e. it's as if it only has one flute), so 100mm/min. Maybe a bit less, see how it goes.

WD40 does work well, but I doubt it does the machine ways much good. If you don't already have any it's well worth investing in the proper stuff.

P.S. Get some 6mm single flute carbide cutters - you won't regret it! I've just been cutting 3/4" thick aluminium with them on my router at 540mm/min, but only 1mm depth of cut. It may well do more but I'm not going to risk it without coolant.

EDIT: I'm assuming 'cut some bittlet' means aluminium! Also the above depends on other factors, such as if it's a deep slot...