The Unofficial JGMaker (& JGAurora) Wiki

Written for JGAurora A5S, using custom firmware. Coped from post by DaHai Zhu.

If your printer is over or under extruding, you may want to calibrate your steps per mm.

1. Ok. So validate your M92 E415 is saved in EEPROM:
2. Turn off the printer
3. Turn on the printer
4. Go to the Change Menu and check Esteps are still 415
5. Or plug in Pronterface and do:
6. M503
7. Then, validate you get 100mm of filament when you SLOWLY extrude 100mm of filament through the extruder (with the bowden tube disconnected, as before)
8. If not, then further refine your Esteps.
9. Then you will need to change the Load/Unload length (don't change the Esteps as that will muck up your prints).
10. There may be a menu item to do this. If not you can set it through Pronterface.
11. Calculate how may extra mm you need to manually extrude after a Load Filament function. Then:
12. M503
13. And look for the M603 line which shows the (L)oad and (U)nload lengths. ie: M603 L460 U600
14. Add the extra mm to both of those values and save them back to EEPROM, ie:
15. M603 L490 U630
16. M500
17. Verify with M503
18. Then test the Filament Load and Unload buttons again.
19. Repeat until you get satisfactory results.

P.S. after all that, you should probably calibrate the Extrusion Multiplier, for each filament type (PLA, PETG, TPU, etc) so that when you request a 0.4mm line, you get a 0.4mm line.