I have been working on printing the Wolf plane from eclipson planes, and have noticed that when slicing I get occasional gaps between layers that cause the print to fail. When I go to Prusa or Cura and slice with the same vase mode settings the gap is not there.
Gap in BambuStudio:
No gap in Prusa:
I had that problem with an item imported from Cura. Try using the Fix Model option.
You can also test it out on Orca Slicer and see what happens 
PrusaSlicer uses Arachne by default. BambuSlicer uses Classic. Try Arachne in BambuSlicer - are gaps still there?
@saxtim I’ve tried that with some other RC plane parts and it causes the internal structures to disappear or change. I’ll give it a shot though!
@3DTech I’ve actually been using Orca and BambuStudio together to compare and they both have the same issue.
@arekxyz I didnt know this about Prusa and I don’t think I’ve tried changing the slicing method so I will give it a shot when I get home! Maybe this is the ticket.
Ignore the deleted posts, I was trying to multiquote and realized I just have to @ each person in a single message
I was thinking you would have already tested Arachne out because it will filter out gaps but that is one long line showing up but it would be interesting to see what you find out on this part. Did you try changing the line width to see what will happen also ?
Keep us updated
It’s entirely possible I tried Arachne and I don’t remember seeing as I’ve tried everything. And yeah I tried line widths from 0.325 to 0.6 and layer heights from 0.14 to 0.25. no matter what that part still is messed up.
On another part I had 2 sections with the same issue but it was thinner so the print didn’t fail. Although structurally I’m sure it’s not reliable.
If you can not find a solution I would suggest posting a bug to the Ocra Team.
You will need to have or create an account to post the bug.
If you feel adventurous you could try out a bleeding edge Orca build with the fully rewritten vase mode. Finally we get a vase mode with no seams, as it should’ve been all the time but wasn’t (simply because it’s not trivial!).
You can download the latest dev version, as of this writing it’s at Bug fix: VFA Test fix · SoftFever/OrcaSlicer@6c2e00a · GitHub under artifacts. It’s not signed so you may have to do some tweaking depending on your OS: I’m on macOS and have to
sudo xattr -r -d com.apple.quarantine /Applications/OrcaSlicer.app
before I’m allowed to run the unsigned binary.
@3DTech Would I present the bug to the Orca team even though it also happens in BambuStudio?
@the_Raz I might actually give that a shot, I’ve noticed the vase mode will often have seams or discrepancies where I wouldn’t expect them.
@arekxyz I switched to Arachne and it still has the same problem.
@the_Raz I tried it with that build and it still exhibits the exact same behavior. While I was gone today I printed the part without vase mode which usually causes a lot of issues due to LW-PLA not liking to start and stop, but after my most recent tweaks to the printing process it came out perfect.
A tip for anyone printing these plane models that are designed to be printed in vase mode; the print files have small cuts in them to allow internal structure while keeping everything in one continuous print, but if your extrusion isnt dialed properly these gaps wont weld closed and will fail. I found that decreasing the line width to 0.375 and then increasing the extrusion multiplier till the line width was 0.4mm made the print quality far better since it allows everything to bond properly.
What happens if arc fitting is off ?
Do to it is disabled in Prusa slicer by default.
Ya can report it to the Orca team or Bambu Studio.
@3DTech Tried that as well, arc fitting on or off leads to the same issue. So far I’m just printing it all without vase mode and it’s working great, but it would be nice to have that feature.
I’ve been having this same issue, and I believe the issue is that the walls are slightly too thick. With these complex vase mode models, there are often points where two 0.4mm walls are trying to squeeze side-by-side through a 0.6mm gap. The slicer can usually figure out how to squeeze the walls through, overlapping each wall by 0.1mm to help them fit (which fuses the walls together and the model designer intended), but sometimes the gap is just too thin and the slice re-routes one of the walls, creating the gap shown in your photo.
I found two fixes. The first, and best fix if you’re the designer of the model, is to slightly increase the width of every gap you’re creating for your vase model to 0.7mm (for 0.4mm walls). This allows both 0.4mm walls to squeeze through and fuse together more effectively than 0.6mm gaps.
The quickest fix, and only possible fix I’ve found if you’re not the designer of the model, is to slightly reduce the “Outer Wall” width in the slicer. As you reduce it in increments of 0.05mm, you’ll notice more of the gaps disappearing. 0.3mm walls seemed to completely eliminate the gaps for me in most cases. This obviously will reduce the integrity of your prints, so I also recommend increasing the flow ratio until your walls are actually printing at 0.4mm.