That's some very useful info. I did calibrate it but I'm beginning to wonder if I used the right technique. I put a line on the filament. I then retracted it 10mm. It then put another line on the filament and measured the distance. I extruded back and forth to make sure it was a consistent length, which it was.
I then used the reprap calculator to tweak it until it was right.
After heating the hotend and trying to extrude I found that it wasn't building enough pressure to push through. I tightened the spring on the airtripper and tried again. This time it started skipping steps. I tried turning the polulu pot switch to the right but that didn't help.
I then used the reprap calculator to tweak it until it was right.
After heating the hotend and trying to extrude I found that it wasn't building enough pressure to push through. I tightened the spring on the airtripper and tried again. This time it started skipping steps. I tried turning the polulu pot switch to the right but that didn't help.