Grid Infill Grinding

[Lee Foulkes]

Hi everyone,

Just printing something out on the Snapmaker U1 and started getting that lovely, familiar grinding noise as the toolhead tackles the infill.

I know exactly what I did—just completely forgot to switch the settings over to Gyroid. My FLSun V400 used to have a terrible problem with this exact same thing. (The FLSun sounded like an industrial grinding machine).

However, it got me thinking a bit deeper about it this time (instead of just blaming the printer hardware like I did with the FLSun). If you look at the way the standard grid pattern deploys, there is a literal overlap of the X and Y portions of the grid. At that exact intersection point, the infill is essentially getting two layers of material, forcing it to sit proud of the current layer. As the print continues over several layers, this buildup gets more and more exaggerated—hence the nozzle scraping and grinding as it passes over it.

It feels like an obvious design flaw in the infill pattern itself. I'm honestly not sure why OrcaSlicer continues to default to Grid if that's the case? Gyroid or even Cross Hatch seems like it should be the standard by now.

On another note, I am still having dreadful problems with the Ender 5 Max. I'm getting a crap first layer offset right after calibration, and there is so much friction in the Bowden tube that the filament is slipping. I continue to persist with it, but really—in 2026! Bambu might be a closed ecosystem, but at least their stuff just works out of the box.

To leave you all on a lighter note, a little joke for you:

I used to have loads of hobbies—too many really, and the wife was complaining. So, I gave up golf for 3D printing.

I guess that still makes me a slicer!

:/

[Kurt The 3D Printer GUY!!]

Well - at least with 3D Printing - that keeps you Home with the Wife! 

Of course, with this new 3DP Endeavor - if SHE At least finds interesting things for you to Print - and she Enjoys the output - then you're in a Good Situation!!!

Yes - what you speak of is an Age Old Problem - one I have noticed MANY Times before - and the issue it causes - and Hearing the bumping noises and it goes over the top of the Infill surface. 

Honestly - I think this is MORE of a Problem - Logically speaking - when you print Larger parts! Why? Cause - that means the plastic has more chance to cool down - and then those cross-overs become more solid. If the part is smaller - it does NOT get enough chance to cool down - and it does more of a Squish that it being hard and thus an Audible bump!

As you stated - it's truly insane that in this day and age - and all the advancements in 3D Printing - this type of Infill is Still used - and used Widely in Slicers - and it's SO Sad when it's the Default and people leave it in use instead of picking another pattern!

Ironically - I'm having SnapMaker Slicer issues right now - but, I will NOT Hi-Jack your thread sir!

-K

[Kurt A 3d]

I hate Grid.  I guess at this point if they changed the implementation  of Grid it would cause more upset  than it would solve problems.    I like Gyroid, or Adaptive Cubic on my XL.   

Kurt-A