Quote Originally Posted by dfox1787 View Post
Hi

Can anyone recommend a surfacing bit for aluminium? Its only for a hobby cnc with a kress spindle.
I think there are many methods, tools and theories of what is "best". Personally I am using simple four flute, 6mm diameter bits at 18-22krpm and that works fine for me. The surface is very smooth and shiny. I can't use larger ones because I have ER11 spindle. I would not dare using any fly cutters with these high speed spindles.