Hardcore Aluminum milling on an S3

[gmack (Gerald Mackelburg)]

@luc.onthego

Just a suggestion but I think there should be a spindle setup and issues thread. It appears that these spindles and VFD need a lot of configuring to get them working properly. Once the right settings are finally ironed out for the different spindle VFD configuration, maybe some kind of installation/configurqation document could be published.

The amazing @Julien already did that for his!