Quote Originally Posted by cubikoman View Post
I will try those values for the 2mm bit. What is step over?

Drill-service.co.uk seems fairly reasonable. Does anyone here buy cutting bits off ebay?
Step over is the distance you move the cutter into the material for each subsequent cut. It defines the width of the cut. It is often expressed as a percentage of the cutter diameter.

However for this particular excercise you're just cutting a slot in one pass, so stepover isn't really relevant. Effectively it's 100% stepover though...

I've bought the odd cutter off eBay. Nice and cheap except for the postage and sellers do seem to insist on using fast postage when, personally, I don't think it's always necessary!