Strange Anomalies in preview Gcode. Mirrored in Part

[finnerj]

Hi all, I am experiencing a strange symptom that's driving me nuts... I am getting strange blobs on my prints but on looking closer these blobs are in the preview... here is the Preview :-

This is the print I get with this Gcode :-

As you can see the same blobs from the preview are in the part. I have checked to see if these blobs match layer to layer in the preview and they do.

If anyone has any idea how to solve this I will be extremely great full.

Thanking you all in advance.

[DzzD]

The blob in the preview are where retractations take place(you can uncheck an option to no display them in the preview), and retractation may produce blobs when printing.

[S3D-Alex]

Just to add on to what was said previously I would suggest checking out our Print Quality Guide section that covers blobs and zits. There are some great tips there for combating retraction defects. I included the link below.

https://www.simplify3d.com/support/prin ... -and-zits/