thanks for the replies ! and the link !

one of the areas i think i can improve is to ramp into the piece and not plunge ...

my pockets are only 10mm wide ... and there are sections that are 6mm wide so i can only use a 6mm bit

i changed to 4mm passes to go down 11mm , i was doing one pass at 11mm , however holding the work piece was a bit of a challenge but i have made a jig now so will change back to 11mm passes as this seems to be better on the tool

but im gonna get some parallel bits as they can easily be resharpened down the road from me