Gyroid infill as model not printing as shown

[print_addict 0]

I am trying to use the gyroid infill as my model by setting walls to zero etc. I have also changed the infill line width.

I have attached a few pics one of what the print looks like in cura in layer mode, the failed print and the original model. I have tried printing this a couple of times and it has failed in the same way. I don't know if it's difficult to print or just an extrusion problem. The problems I have are that the change in infill line width isn't being followed, I set the part I want to be just Gyroid infill to 2.45mm infill line width in the per object settings and it seems to still be printing at .35mm. In places there is a perimeter wall though non is shown on the model. There are also two or three lines running through the print.

 

I have tried this on an Ultimaker 2+ and extended Ultimaker 2+.

 

Thanks.

[smartavionics 263]

Hi @print_addict, could you please attach the project file so I can look at the settings and try slicing it. Thanks.

[print_addict 0]

Here is the project file.

 

Thanks.

UM2E_base_small.3mf

[smartavionics 263]

Thanks for the file. I think the main problem there is that your extruder/hot end simply can't shift enough hot plastic to be able to print a nice 2.45 mm wide line using a 0.4mm nozzle. To get rid of the straight lines you need to turn off combing completely. Hope this helps.

[print_addict 0]

Thanks for taking the time to have a look at the file. Is there any way to get the infill to print thicker walls? Using multiple lines for instance.

 

Thanks.

[smartavionics 263]

20 minutes ago, print_addict said:

Thanks for taking the time to have a look at the file. Is there any way to get the infill to print thicker walls? Using multiple lines for instance.

 

Thanks.

 

I tried setting the Infill Line Multiplier to a value higher than 1 and it did print multiple lines for the infill but, unfortunately, it appears to produce duplicate lines and a lot of weird travel moves so I can't recommend it. Sorry.

[print_addict 0]

It also raises the print time from 4 hours to 1 day 10 hours! The effect isn't limited to gyroid infill either. Is there any way to raise this with the Cura team ?

 

 

[kmanstudios 979]

At the risk of sounding sarcastic (which I am really being serious), I just went with the Larger bore nozzles (0.6, 0.8. etc.) to get thicker infills.

 

However, I have not gotten a good print without some sort of shell (PVA or otherwise), even with the combing off. But I am getting nice patterns in see through objects that I like.

[print_addict 0]

1 minute ago, kmanstudios said:

At the risk of sounding sarcastic (which I am really being serious), I just went with the Larger bore nozzles (0.6, 0.8. etc.) to get thicker infills.

 

However, I have not gotten a good print without some sort of shell (PVA or otherwise), even with the combing off. But I am getting nice patterns in see through objects that I like.

I don't have this option as the printer is in a makerspce. We don't have a multinozzle machine either unfortunately.

 

I think I'll have to find another way to generate the object.

[smartavionics 263]

14 minutes ago, print_addict said:

I don't have this option as the printer is in a makerspce. We don't have a multinozzle machine either unfortunately.

 

I think I'll have to find another way to generate the object. 

 

How about this... take an existing gyroid stl (there's a bunch on thingiverse) and using a 3d modelling app intersect the hemisphere shape so you end up with a hemisphere gyroid model which can then be printed as normal walls/infill?

[smartavionics 263]

i.e. something like this

 

 

Gyroid_80x80x80.stl

[print_addict 0]

23 minutes ago, smartavionics said:

 

How about this... take an existing gyroid stl (there's a bunch on thingiverse) and using a 3d modelling app intersect the hemisphere shape so you end up with a hemisphere gyroid model which can then be printed as normal walls/infill?

I'm using onshape and it's not possible to do a boolean operation on a mesh(stl) in onshape. I believe meshmixer can do this ? but I use linux and it doesn't run there. Is there any other way ?

[smartavionics 263]

Sorry, I don't know.

 

[smartavionics 263]

Hi Eric, you're in the room, any suggestions?

[kmanstudios 979]

For? Grapphics programs? His search would be as good as my search.

 

Printing options? Not really any more than offered already. As I said, I just started to use transparent skins or PVA, mostly transparent, to get a clean gyroid infill (Let the pattern show through). This has more to do with the limitations of how cura handles infills. I mean, seriously, not many weirdos (no offense to the OP) like me that wanna do this stuff.

 

Most salient points were made by you. But I still would investigate larger bore nozzles rather than more infill walls.

[print_addict 0]

 

7 minutes ago, kmanstudios said:

As I said, I just started to use transparent skins or PVA, mostly transparent, to get a clean gyroid infill (Let the pattern show through). 

 

Do you have any photos of such prints to show

 

3 minutes ago, kmanstudios said:

I mean, seriously, not many weirdos (no offense to the OP) like me that wanna do this stuff.

 

Non taken 🙂

 

[kmanstudios 979]

11 minutes ago, print_addict said:

Do you have any photos of such prints to show

While there is more color here than one nozzle, the effect remains consistent:

 

https://community.ultimaker.com/topic/462-post-your-latest-print/?do=findComment&comment=224970

Edited November 22, 2018 by kmanstudios

[print_addict 0]

I found a stp file of a gyroid on grabcad and I was able to do a boolean operation on that model.

Here is the result of an 11 hour print , with no supports so I have some repair work to do. It was printed in ABS so I will be using ABS slurry to repair it.

 

 

 

 

 

 

 

 

 

 

 

 

Edited November 24, 2018 by print_addict