What size (3mm shank) ball endmill should buy?

[HankMcSpank]

FWIW, since 'Jenny from the block' remains totally uncontactable unless you travel on a 300 mile roadtrip to a wheeltappers & shunters fair tucked away in a place that likely isn't recognised by a sat nav, then this guy is selling 4 x flat endmills (3mm shank) for $7.50 delivered to your door...


http://cgi.ebay.co.uk/ws/eBayISAPI.d...m=180354863835

(that works out at about £1.15 per endmill delivered)


(his price is listed a little higher, but if you submit a best offer of $7.50 for two sets (eight end mils in in total, he'll accept - well he did with mine).

Not ball end mills ...but cheap as chips for carbide flat endmills (last price I paid was about a fiver delivered from an Ebay seller in the UK)

[John S]

One think I noticed with those is they are 4 flute, now 4 flute can be centre cutting or can't depending on how they are ground.
The ad doesn't say centre cutting so it's anyones guess, if one flute doesn't cross over centre then they won't plunge cut.

Can you post after you have received them ?