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Cura 2.3 How to reduce useless retraction with support

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Posted · Cura 2.3 How to reduce useless retraction with support

Hello,

I've got an issue with Cura 2.3 (I havn't this trouble with 1.15, and I have the same useless retractin with Simplify 3D that's why I stopped to used it to Cura 2).

When I print a part with support (dual extrusion) I have a lot of useless retraction on the support.

I tried different support Zig Zag, Grid, etc... but I have the same useless retraction. I tried with combing Off, All, No Skin... Same results. I tried to increse the minimum travel to 2mm... Nothing change.

The modele I tried to print : http://www.thingiverse.com/thing:39751

And bellow the gcode result in Simplify 3D (each dot is a retraction) :

1.thumb.jpeg.4dbe9c7109ac21a7055209aa28e532ca.jpeg

2.thumb.jpeg.84ccefeff12f0011ca7f37522411e8d3.jpeg

1.thumb.jpeg.4dbe9c7109ac21a7055209aa28e532ca.jpeg

2.thumb.jpeg.84ccefeff12f0011ca7f37522411e8d3.jpeg

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Posted · Cura 2.3 How to reduce useless retraction with support

I'm sorry for this bug. I've solved it for the next version of cura.

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Posted · Cura 2.3 How to reduce useless retraction with support

Oh really ? You find something wrong ? Great news !!!! I was afraid to havn't answer about that, or worse,that it was normal.

Thanks !

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Posted · Cura 2.3 How to reduce useless retraction with support

I'm sorry for this bug. I've solved it for the next version of cura.

 

I just saw that the version 2.3.1 was released. Is this bug is fixed in this version ?

I saw in the release note : "Fixed an inheritance issue for dual extrusion." Could you explain more what it was fixed ?

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Posted · Cura 2.3 How to reduce useless retraction with support

No it will be fixed in cura 2.4... and then still not fully, because to fully reduce retractions to a minimum would require write a bit more slicing time.

Inheritance issues are about how settings relate to each other. The bug resulted in some PVA settings being applied to the print you did with PLA if u would have them both selected, but printed with PLA only - I think..

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Posted · Cura 2.3 How to reduce useless retraction with support

No it will be fixed in cura 2.4... and then still not fully, because to fully reduce retractions to a minimum would require write a bit more slicing time.

Inheritance issues are about how settings relate to each other. The bug resulted in some PVA settings being applied to the print you did with PLA if u would have them both selected, but printed with PLA only - I think..

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Posted · Cura 2.3 How to reduce useless retraction with support

when is 2.4 due to be released and is there a due date for when the retraction issue will be released?

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Posted · Cura 2.3 How to reduce useless retraction with support

No it will be fixed in cura 2.4... and then still not fully, because to fully reduce retractions to a minimum would require write a bit more slicing time.

 

I'll take some extra slicing time over failed prints any day. And even if excessive retractions don't lead to failure, they still take time during printing, a lot more time than extra slicing time (unless you're talking about going back to Skeinforge slicing times that is).

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Posted · Cura 2.3 How to reduce useless retraction with support

If the slicing time incresed too much, maybe you can activate the auto slice deactivatable feature... :-)

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