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ignatius

Relation in Cura between supports and Nozzle diameter

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Hi!

That´s a question about an issue I am having with Cura.

The thing is that I must print again a piece that I already printed few months ago. When I printed it, I only had a 0.4mm Nozzle, but now I have a 0.8 and I want to use it because the print time is shorter.

While I uploaded the file to Cura and change the settings to a 0.8 Nozzle, I realize that depending of the Nozzle diameter, Cura changes the supports. I was wondering if it is a software bug, because I don´t have a clue why Cura does it.

5a331a4e8ebe9_supports0.4-1.thumb.jpg.f3cdfefbb92cff3809c7d562c43a65f7.jpg

Supports 0.4 Nozzle - Layer 1

5a331a4eb1d30_supports0.8-1.thumb.jpg.434668f06b90c9dc4a327e807f4c8b07.jpg

Supports 0.8 Nozzle - Layer 1

5a331a4ec91ae_supports0.4.thumb.jpg.5b7fcf946aff303f4efeefbb99a75f4c.jpg

Supports 0.4 Nozzle - Complete

5a331a4eed414_supports0.8.thumb.jpg.4d298c5f86c0f3a442ff7716825ae786.jpg

Supports 0.8 Nozzle - Complete

Thanks!!

5a331a4e8ebe9_supports0.4-1.thumb.jpg.f3cdfefbb92cff3809c7d562c43a65f7.jpg

5a331a4eb1d30_supports0.8-1.thumb.jpg.434668f06b90c9dc4a327e807f4c8b07.jpg

5a331a4ec91ae_supports0.4.thumb.jpg.5b7fcf946aff303f4efeefbb99a75f4c.jpg

5a331a4eed414_supports0.8.thumb.jpg.4d298c5f86c0f3a442ff7716825ae786.jpg

Edited by Guest

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"it's a bug not a feature". Um. Well it's a feature that you can't control this independently.

Cura has an invisible setting called "line width" which is controlled by a combination of nozzle size and shell width. If (as you should always do) you set the shell width to a multiple of nozzle width then line width will be equal to nozzle width.

All traces - brim/shell/infill/support - everything - is drawn at "line width". It would be nice to have the support be a different line width but there's no way to do that.

So now by default the grid is at 15% fill amount - so with thicker lines the lines are farther apart. If you want the grid lines closer together try 30%.

Also you can reduce the amount of brim lines by half since your nozzle is twice as thick.

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