I've worked with a member of the Robo 3D forums and so far I've come up with this:
I was hoping someone here might be able to help fine tune this so I can get nice, clean starts on my prints. Right now this starts trying to extrude a line on both ends of the Y axis, but no filament comes out. I'm hoping for something that mimics how S3D primes and purges the PowerSpec. Any help is appreciated.
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G28 ; home all axes G1 Z5 F5000 ; lift Z by 5mm M565 Z-0.6 ; set the offset for auto-leveling mechanism G29 ; run auto-level G1 E5; Extrude G1 F1000 X5 E45; Move and Extrude G1 E50; Extrude in place G1 F5000 Y5; Move to Y5 G1 F1000 E55; Extrude in place G1 X220 E95; Move and Extrude G1 E100; Extrude in place