Freecad

[routerdriver]

I found this video very helpful https://www.youtube.com/watch?v=c4JUnB1AHdY .The more recent series on Path topics from sliptonic was also very useful.It also helps that there is a post processor for my controller bundled with Freecad.I am increasingly impressed by the most recent developments in 3D surfacing and pocketing and hope to try using them in the next few days.There are some clever people donating their work to the project and I am thankful that they do so.