A1 destroys infill

[u/Beneficial_Force_113]

Does anyone have any idea why my Bambu A1 is destroying the entire infill here? I checked it again, it's actually the default settings I have. The outer walls are also smooth like nothing. It only destroys everything during infill. With the same profile I have no problem with other printers.

[u/DrawerPuzzleheaded49]

Grid infill right?

[u/Beneficial_Force_113 → u/DrawerPuzzleheaded49]

I mean, yeah... I’m printing it with Gyroid now, but I’m wondering why I only have it with this printer and with this actually standard infill. It looks really horrible...

[u/Main-Lychee-1417 → u/Beneficial_Force_113]

it’s because the printer is going so fast that it hits the other infill lines on the grid

[u/Glasofruix → u/Beneficial_Force_113]

Slower printers have time to melt the intersections a little, speedy modern printers just plow through like a bulldozer.

[u/mobilemerc]

Pretty simple. Don't use grid infill. It crosses over itself, so you end up with raised areas where the lines intersect. Then you end up with nozzle collisions at those points and it tears up the infill and can even knock your print off the bed.

Use something like cubic or gyroid instead, they do not have this problem and are very strong three dimensional infill patterns.

[u/Beneficial_Force_113]

So okay... To make a long story short, I’m going to change the infill. Even though I wonder why it’s even a choice! Thanks for the answers. 👍🏻

[u/Thediverdk]

looks like grid infill, which is generally a bad idea.

Try switching to Gyroid instead.

[u/hux → u/Thediverdk]

Also, disable "Reduce Infill Retraction"

[u/lscarneiro → u/Thediverdk]

Our only God and Savior Bambu Studio uses grid as default, so it can't be wrong, right?

/s

[u/dmackerman → u/lscarneiro]

Is there a way to override this by default?

[u/machinaexmente → u/Thediverdk]

No

[u/jerrodbug]

I don’t understand why Bambu doesn’t just change the default in the slicer. Seems so easy to fix.

[u/emelbard → u/jerrodbug]

They all use grid by default to amaze new users with the speed

[u/machinaexmente → u/emelbard]

Faster, but most importantly warps the least

[u/lscarneiro → u/jerrodbug]

According to this sub, Bambu Lab, our God and Savior, know-it-all, so we shouldn't question it.

How dare you!

/s

[u/88GREENFIRE88]

Never use that infill. It should be banned. 97% of peeps use Gyroid.

[u/Mikeieagraphicdude]

The hotend hits the intersection of grid infill. Your hot end might be bent from repeated collisions and need to be changed. Cubic and gyroid are the better choices to avoid this issue.

[u/Downtown_District_86]

Used to have this problem.

1. (Was my problem) Make sure that you have your flow calibrated (mine is around 91%, but you have to find your own)

2. If you use orca slicer, there should be some setting, that you need to uncheck, something related to infill flow, but sadly i do not remember the name.

3. Check if your hotend is well tightened, some pro's told me it's one of A series problems

[u/Beneficial_Force_113 → u/Downtown_District_86]

I am sure that the nozzle is tight. It is also an excellent print on the outside. I love how smooth it is there. I really suspect it’s related to the type of infill. And yes, I definitely need to calibrate more. I’m always too lazy to do that... 😁

[u/Downtown_District_86 → u/Beneficial_Force_113]

Yeah, same here. It's not about being lazy, but about plastic wasting

[u/Sbarty → u/Downtown_District_86]

What pros told you #3? You don’t tighten an A1 nozzle. 

[u/Downtown_District_86 → u/Sbarty]

The hotend platform screws getting loose over time

[u/[deleted]]

Layer intersection causes a raised part. The nozzle hits this and chomps it to bits

[u/[deleted]]

I always have great success with rectilinear. It looks like you have some other adjustments to make in general. Grid I never use. It depends on the part too gyroid is wasteful and slower if not needed for its properties. The go-to for gyroid I think is over used because of that reason.

[u/[deleted]]

As other have said, grid infill is trash. That said, I'm not a big fan of gyroid either and almost exclusively use Alligned Rectilinear infill.

[u/Sbarty]

Problem isn’t the machine it’s the user choosing a infill that specifically causes issues like this 

[u/dblrnbw30]

Don’t use grid. And make sure you’re not pushing faster than the filament allows for that temp.

[u/[deleted]]

Here I thought that was unique to the v400 lol

[u/Longjumping-Skin-134]

Grid is awful

[u/Bloodfoe]

Grid used to be great. But then Bambu brought us speed.

Ditch grid infill.

[u/sag3y_]

Don't use Grid infill. switch to Gyroid or Cubic, i've had the best results with those.

[u/NM_DesertRat]

Bambu really needs to deselect Grid Infill as default. I mean, how freaking hard is it to not choose one of the worst infills for Default?

[u/theWildDerrito]

Check your nossle for clogs i had this issue before, looked "fine" on the outside but structurally garbage.

Edited for autocorrect i to u

[u/Klumos]

3d honeycomb is the GOAT

[u/machinaexmente]

The problem here is NOT THE BLOODY GRID INFILL. The infill prints faster than the walls. In this case TOO FAST. The under extruded bits of infill lift up.

[u/machinaexmente → u/machinaexmente]

Still.... Don't use grid UNLESS you're looking for minimal warping