Support printing on air

[ctb5009 0]

I've seen a few other posts with similar titles, the advice/troubleshooting steps there didn't work for me.

 

Details:

Cura 5.6.0

Wall Ordering: Inside before Outside set

Support Distance Priority: Z overrides X/Y.

When I switch to Tree support the slice fails. I'm submitting that bug report next.

 

 

What else can I do?

 

 

CE3PRO_Drive Shaft.3mf

[Slashee_the_Cow 480]

It's because Support > Support X/Y Distance is high enough that the radius of the support is higher than the radius of the part below, but not higher than than the radius of the part below + its support distance, so it won't print below where it is because it would be too close to the part below.

 

The best fix is probably to increase Support > Support Horizontal Expansion to 1.4mm (not a scientific calculation, just played with the number until I got the result I wanted) or higher, this way it will expand so it's large enough to go around the lower part:

This will keep a decent distance around the lower part so you definitely wouldn't have to clean it up:

 

You could also lower Support X/Y Distance (and Minimum Support X/Y Distance) to 0.2mm:

but this will get the support very close to the part below:

 

And about trees: works fine for me, but every Cura installation is its own beast. Try upgrading to 5.7, there have been tree improvements in the last few releases.

[ctb5009 0]

@Slashee_the_Cow, this is perfect! Thank you for the detailed response.