[SOLVED] Skirts not using retraction settings

[andrewsi]

I have a model in which the first layer has multiple disconnected islands.

Any skirt settings, whether for priming, or to increase the footprint for adhesion, do not appear to use the retraction settings specified for the rest of the model - retraction only seems to kick in when the actual model itself is being printed. This leaves a gooey mess on the print bed in between the "islands" of the skirt.

Also, in other slicers, the skirt (if not touching the model) typically gets calculated to surround the entire footprint of the model with a single skirt, rather than multiple skirts for each island. What is the "by design" behavior for the 3.0 slicer?

Example of the slicer output for the first few layers:

[KC_703]

I'm experiencing this also. When the hotend travels between skirts, the filament retraction settings don't seem to take effect. Leading to strings between skirt "islands"


If you're getting a gooey mess, it may be because S3D is trying to optimize the start point of each layer. Setting a "specific start point" from the "Layer" tab and "Print islands sequentially..." should help organize the stringiness. I like Front (Y), Middle (X) of the bed lets me watch the seam from the webcam. Of course, keep the setting in mind when orienting the project. Rotate so the seam is least visible.

[JoeJ]

I just made a few test prints. Every time I had different skirt islands to jump between, the software added a retraction just like I would expect (see screenshot). I wonder if it's actually some other setting you have for your retraction behavior that is causing it?

Can you post a factory file?

[andrewsi]

OK, here's a factory file for the object in question.

[JoeJ]

It isn't retracting because on the Advanced tab, you have the option enabled for "only retract when crossing open spaces". This means that the software will only perform a retraction if the nozzle is going to move across one of your part's perimeter outlines. If it's just moving completely inside of those outlines or completely outside of those outlines, no retraction takes place.

If you disable that option, it will start retracting in regions where you aren't crossing over your outlines.

FYI - this behavior is the exact same in the 2.x versions, so it's nothing new with 3.0. This is how it has always worked.

[andrewsi]

Oh, I get it. Yeah, that makes sense.

Thanks-

[KC_703]

I had the same setting as a default. Nice troubleshooting!