Prusa3D Forum - Recent Topics

Newb question: Thin internal geometry is being filtered out.

curator23 — Thu, 23 Apr 2026 19:59:45 +0000

Hi,

I'm trying out PrusaSlicer for the first time.

I'm having difficulty getting my models to slice correctly.

I often use thin gaps to build internal structures, typically around 0.01-0.05mm wide.

PrusaSlicer is filtering out these structures, and I don't know how to stop it from doing that.

Can anyone offer advice on how to do that, or if it is even possible?

Thanks,

C23

Hole size compensation parameter in PrusaSlicer, when?

MichielvH — Thu, 23 Apr 2026 19:24:02 +0000

I've been using my new Core One Plus for three months and it really is a good printer for me. Because PrusaSlicer seems to be the more compatible slicer for the Core One, I've been learning this piece of software, coming from using Ultimaker Cura for the last 9 years. Unfortunately, there seems to be almost no support for the Core One in Cura, so I think I'm sort of 'condemned'/'forcefully married' to using PrusaSlicer. The problem is that there's no way in PrusaSlicer to adjust the size of printed holes, in Cura there's the 'XY Hole Compensation'-parameter which does its job quite well. I'm missing this feature enormously in PrusaSlicer. Now I have to adjust the size of the hole(s) in the CAD model, which is kind of rediculous if you think that for CNC milling machines this workflow is totally unneccessary.

I'd plead for an option similar to the 'XY Hole Compensation' paramater in PrusaSlicer. Come on Prusa, it's already Q2 in 2026 and this desire for a hole size compensation feature in PrusaSlicer dates back to before 2020!

Linear Rail Lubrication - need more details?

Neal — Thu, 23 Apr 2026 19:03:17 +0000

I am now due for my first linear rail lubrication since I purchased my Core One fully assembled.
Where can I find better detail and photos than the Core One Maintenance page:
https://help.prusa3d.com/article/regular-printer-maintenance-core-one_829710

I tried google for about 15 minutes, and all I find is other model printers, sometimes other brands.
I have the official lubrication kit, but I can't find the needle ports on the carriage. I need a photo
or video to show me where to insert the needle into what port?

Thanks in advance for any help, mentoring, guidance.

Neal

Heatbed heater failing

Hussain — Thu, 23 Apr 2026 17:27:45 +0000

So this issue has been going on since the start. This is self-assembly kit. Here are the attempts to fix:

1- Checked with multimeter all resistances and voltages

2- Tried with Satin sheet, PEI sheet, no sheet

3- Changed heatbed cables to xBuddy Box

4- Changed heatbed thermistor

5- Fully changed heatbed assembly

After changing the FULL heatbed aseembly, still no luck. Where can the issue be? It surely cannot be the heatbed. Temp reaches 68/110C during test only.

Can it be the xBuddy? what else can I try?

Print Settings for Elegoo Rapid PETG

faye — Thu, 23 Apr 2026 17:03:20 +0000

Hi! I'm pretty new to 3D printing and I just bought these Elegoo Rapid PETG filaments to use with the original Prusa MK4S printers on campus. I ran into issues with the prints because the filament kept lifting off the bed plate and the nozzle would get stuck on filement blobs and create a mess. I was wondering if there were any special print settings I need to change for this specific type/brand of rapid PETG. I tried changing the bed temperature so that It would stay 85C degrees and that helped a bit, but still failed later on.

Texturing a multi-part print consistently

Wooloothedark — Thu, 23 Apr 2026 15:53:28 +0000

I'm trying to add a wood texture to a multi-part print, but it has so many pieces that I can't just do it individually. Not only because it would take five years, but also because the wood grain wouldnt be aligned across parts. While yes, I could just use this one, it doesn't come with each color being a different part. And I can't paint well for crap, so I'm stuck with the far more complex solution. So, I'm wondering if there's a way I can apply the texture to the model globally BEFORE slicing it, because it doesn't all fit on one bed.

my proposed solution would be to:
1. arrange them into their assembled shape
2. merge them but keep them as separate shells**
3. Apply a texture to them via bumpmesh.com
4. Separate the mesh again into separate STLs with Meshmixer ***

**No idea how merging works in PrusaSlicer, but I assume since you can still split parts that have been merged, it does this automatically.

*** a tool I have never used before lol

However, this also seems decently lengthy, and after attempting it, neither Meshmixer nor Prusaslicer itself can open the merged file exported by PrusaSlicer (I didn't even apply the texture yet), so please let me know if I'm overlooking something simpler.

Thanks for the help!

P.s.
I'm decently new to 3d printing (and most of my hours are on a Bambulab P1S at my school), and I'm still trying to fumble my way around the more advanced aspects of PrusaSlicer. So please try to keep the lingo beginner-friendly!

PrusaSlicer 3.x status

hyiger — Thu, 23 Apr 2026 15:00:30 +0000

I don't work for Prusa, just sharing from Prusa's github repo: https://github.com/prusa3d/PrusaSlicer/releases

PrusaSlicer 3.x status

Many of you know that we are working on a bigger release (PrusaSlicer 3.0.0), and you are probably eager to get your hands on it. We are sorry to keep you waiting and we admit that the work is taking longer than expected. There is massive amount of technical debt that we need to get rid of to allow future maintenance of the application. We are now fully focused on that, along with developing new features.

We are also sorry that we are not very active in our GitHub issue tracker lately - for the same reason. We plan to get back to it when the new slicer is released and make things right again. We hope that the work we are doing now will allow us to release more frequently in future and get back in touch with our community.

At this stage, we can confidently say that the 3.x groundwork is well in place and most features are ported. We are currently finalizing the UI and bugfixing. The time to release it now counts in weeks (although there may be more than four). The previous time estimates we worked with internally proved not very accurate, so we will rather not be more specific now.

Fixing layer start first 3 mm of print idex

Phil — Thu, 23 Apr 2026 13:58:10 +0000

Hi everyone, as you see, I have the trouble of poor starting off the print line. This part is printed on an IDEX printer, specifically a SV04. I am using the "windshield" function to build up pressure in each print head after each tool change. I thought that with the windshield running with one line around my object, I would get rid of the rough start on the object itself. But it seems like even though it runs its skirt, it does not have enough material in the print coming from the skirt to the object, which is only a small way. I wonder if I can use a function in Prusa Slicer to help me with this. I haven't found one yet. Do you have any tips or recommendations?

Thank you!

The printer needs attention message on Prusa app.

gooner — Thu, 23 Apr 2026 13:25:01 +0000

Pretty much getting frustrated as I occasionally get the notification that the printer needs attention when there are no issues at all. However last night I got a big blob and the app was crickets.... Its obvious that this notification is pretty much useless as it did not flag me during a real issue. What is triggering this message as it appears to be of no actual use but to frustrate people. Anyone else seeing this??