Trying to calibrate issue

[diceman]

I'm a new owner of a Flashforge Creator X Dual head, and I'm working on calibrating the print heads. I am currently working on the left head, and this is my first test print after some initial tweaks. I'm not sure what is causing this issue. I am testing this with Hatchbox transparent red PLA, printing at 210C.

If you can see the edge, it looks like it has uneven starting/stopping. What would be causing this?

Jon

[jfkansas]

Probably over extrusion and to much heat, not enough cooling. The first calibration you should do is a 20mm x 20mm cube with 100% solid infill. Once you get that right then most everything else falls into place. Also try printing 2 at once because it will give more time for the previous layer to cool.