How to Flash modified grbl onto arduino.
Using MACH3 post processor to generate g code.
Ending film with plans to build

CNC. Fan Cover;
https://www.thingiverse.com/thing:74964

Recently I updated to grbl 1.1 (it's really easy now)
In order for grbl 1.1:
No need to open notepad and change the config file
just verify and upload as done before
CHANGE SETTINGS;
$30=0
$31=0
$32=0
(Pins no longer switch)

DISCLAIMER: I am in no way responsible for your actions. This video is meant to be a DIY type/educational video of how I accomplished the outcome. I am good but not "trained" so there are most defiantly "better" ways to accomplish this, this is just one possibility.