Can't slice fewer than 4 top layers and other settings changed

Bambu Lab Software
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1

I tried searching to see if anyone else has mentioned this. Since recent updates, I’ve noticed that when I go into previously saved projects, some settings are now changed and “saved” as if I had set and saved them like that previously. The most glaring one is the Top Shell Layers on every project I’ve opened has been changed from 3 to 4.

Has anyone else noticed changes in settings or know what may have caused this?

Edit: Checking this out further, it doesn’t matter what I set the Top Shell Layers to in the slicer, it always slices 4 top layers minimum. If you go over 4 then it slices fine but choosing 1-3 always creates 4 layers.

2

Check your Top shell thickness setting. By reducing it to be the same as the layer height and setting Top shell layers to 1, I was able to get 1 top layer when sliced in Bambu Studio V 1.08.02.56
I also tried Top shell layers to 2 and get 2 layers when sliced, It appears that the Top shell layers can’t be set to a number that would result in a top layer thinner than the Top shell thickness setting except that Top shell layers set to 0 will result in no top layer without regard to the Top shell thickness setting.

3

Thanks. Sure enough it was changed to 1mm. I guess this was another setting that was somehow forced into all of my saved projects when I open then. Well, I guess the change is actually in the custom print profile. Looking at all the default profiles, they all have 1mm now too.

4

That kind of makes sense thou? doesnt it ? or am I reading it wrong?
The thinking i guess is

  • Top shell overall is the combination of Top Layers
  • Qty of top layers, logically thefore have to qual top shell

I am not saying its the right decision, just working out if that might be the logic behind the code or bambu decsion.

5

It does make sense.
Might be helpful if the number of layers is not possible due to thickness setting that a warning message would be provided. There are so many settings and it’s not always clear that one setting will not give the desired result because of another setting.

6

I’d swear it used to be like this or maybe it was a different slicer. But if you had a value in one, the other setting would gray out and be ignored. Since they are both doing the same thing in a different way, it makes no sense to have them both active. The Bottom Shell thickness is still at 0mm as the top should be by default.