1mm Ball Nose Bit Advice

[dcrowder]

I'm taking delivery tomorrow of a 1mm Ball nose bit for carving some details in wood but I'm under no illusion this isn't going to be easy and I'm going to have to be careful with my feeds.

Does anyone with experience have any advice that they could share? Speeds, stepovers, stepdowns - anything really. I just don't want to break a bit that isn't cheap on it's first run! The relief is approx 12-15mm from top to bottom. When I say wood I'm flexible with soft/hardwood and am prepared to suit the material to the application. If my wishes aren't possible then I'd even be prepared to work with something like foam board.

The carvings are going to be approx 300x400 but I need the 1mm bit to achieve the resolution I'm after.

Cheers!

edit: this is the bit.... http://www.shop-apt.co.uk/2-flute-lo...ong-55hrc.html