Step drill bits (where to get) ?

[birchy]

Sorry, I misunderstood...I thought you meant pilot DRILL and countersink combined. There are things like these, but they look a bit Mickey Mouse to be honest...

Countersink Cutter - 3/32" Rivet CC40 - Cleaveland Aircraft Tool
Buy SNAPPY 7/64" x 3/8" Twist Bit Countersink For #6 Screws Fits Festool Centrotec Chucks at Woodcraft.com

I mostly prefer to lock the work piece and then drill, change to tool and countersink. Bit of a PITA but it gives the best accuracy and squareness. If it's not too fussy, I use a cordless drill.

[dazza]

Sorry, I misunderstood...I thought you meant pilot DRILL and countersink .

its my fault fella (termonoligy how ever its spelt) its a piloted countersink im after doesnt have the drill going through it just a plain pilot on the end,ive found a few but its unlikley im gonna find the size i need so i,ll make do thanks.

[birchy]

You could customise a standard countersink by grinding it back, I suppose. You'd probably need a lathe with a grinding attachment, though.