Gyroid infill without perimeters
 

Gyroid infill without perimeters  

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Anachronist
(@anachronist)
Trusted Member

I'm visiting my parents, and my father showed me a small lamp that needs a new lampshade. I thought of printing one as a gift for him, using just a gyroid infill pattern with no perimeters, printed with a semi-translucent filament.

The problem is, PrusaSlicer adds perimeters to bits and pieces of any infill pattern, even if you set perimeters to zero.

I've seen others manage to print an infill pattern by itself. Is this capability available in other slicers?

This topic was modified 3 months ago by Anachronist
Posted : 06/12/2020 4:43 am
Vojtěch Bubník
(@vojtech-bubnik)
Admin

You may try the https://github.com/prusa3d/PrusaSlicer/releases/tag/version_2.3.0-beta2

and reduce infill anchoring length using the new infill anchoring parameters (only available in advanced / expert mode)

 

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Posted : 06/12/2020 6:00 am
fuchsr
(@fuchsr)
Reputable Member

Couple of other thoughts:

Does it have to be gyroid? You may have more luck with other infill patterns.

Can you flip the model on its side? In my hands, I've been more successful printing without top and bottom layer than without perimeters.

Posted : 06/12/2020 12:29 pm
Peter
(@peter-16)
New Member

Sorry to say, but Cura...

Just remove the wall thickness, the top and bottom layers.

Posted : 06/12/2020 3:12 pm
JoanTabb
(@joantabb)
Moderator

Gyroid May not be a good choice...
I left some top and bottom layers to leave neat edges and somewhere to mount the light fitting

this is in Prusa Slicer 2.3.0 beta1 

I used a low infill ratio so the image would be clearer

a higher infill ratio will join more cells together...

regards joan

This post was modified 3 months ago by JoanTabb
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK...
Posted : 06/12/2020 4:30 pm
JoanTabb
(@joantabb)
Moderator

 
3d Honeycomb has more interconnects

2D  (BASIC) Honeycomb may be easier to print!

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK...
Posted : 06/12/2020 5:39 pm
Anachronist
(@anachronist)
Trusted Member

Thanks everyone. PrusaSlicer 2.2 certainly won't do it. I didn't know there was a 2.3 beta available. I've been meaning to check out Cura too, but had never gotten around to it because up until now, PrusaSlicer has done whatever I needed.

I'll experiment with different infill patterns. I know gyroid has problems with overhanging layers at low densities. Hex or cubic might work nicely too.

My idea is to have a rather thick lampshade with a space hollowed out that rests on top of the LED bulb. It's a very small bedside lamp. The LED won't get too hot, but still probably too warm for PLA. Printing in natural PETG would look nice, I think.

Ideally I would be figuring out how to generate a gyroid surface of any arbitrary thickness in OpenSCAD, and then I could rotate and orient the pattern as I please. But after dabbling with the deceptively simple gyroid formula, I concluded that would be a very heavy lift.

 

This post was modified 3 months ago by Anachronist
Posted : 07/12/2020 5:48 am
Joey
 Joey
(@joey-2)
Estimable Member

I have a Solidworks model of gyroid and am glad to send it to you. Then you can mirror, extrude cut, scale, etc. to get your lampshade.

Let me know the file extension.

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Posted : 07/12/2020 12:37 pm
Joey
 Joey
(@joey-2)
Estimable Member

Have you looked for a gyroid on grabcad.com?

Mk3 - 1X
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Posted : 07/12/2020 12:39 pm
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