Quote Originally Posted by Robin Hewitt View Post
Everything bends, the trick is to minimalise it :D

I don't usually post pics of where it goes not so good, but what the heck...

1: Backlash on a change of direction, looks like a ditch, actually 4 or 5 thou deep

2: Chatter, an echo from the roughing out, should have changed speed.

3: Tool flexing, you can see where the tool tip bent inwards and wasn't completely removed by the finishing pass. You know it's the tool becae it gets deeper towards the tip.
Thanks for sharing Robin, helps know what I'm looking for... :) btw, #3 are you sure the tool flexed rather than had excessive runout or the work was offline? I'm not sure I understand how the tool tip can bend into the work, unless it was catching because of excessive feed rate