Prusaslicer 2.9 and helper disks
The problem I am having is the corners are lifting and my model is warping. I want to add helper disks to the corners, but all the tutorials are old and don't work when trying to follow them. I see that there is set as separated objects and under it printable in the drop down menu. Can someone please explain the proper sequence because I keep getting gcode errors.
RE: Prusaslicer 2.9 and helper disks
Select the part you want to add the disks to, then rightclick on it > Add Part > Gallery > helper_disk.stl.
The disks behave and slice differently if you add them to your part or add them independently to your platter. See screenshot:
circle on the left was added to the platter, circle on the right was added to the part. See that the perimeter of the disk on the right is contiguous with the part, the perimeter on the left is intersecting with the perimeter of the part. That is the cause for the error about conflicting g-code paths.
RE: Prusaslicer 2.9 and helper disks
Add your problematic part to the platter. Next right click on the part and select "Add Part", then select the gallery and the helper disc. Then place the disc under the problematic area. You must be in either normal or expert mode for the Add Part option to be visible in the right click menu.
The process hasn't changed in forever so I'm not sure what out of date tutorial you are using. Just tried it in 2.9 to make sure it was as usual.
RE: Prusaslicer 2.9 and helper disks
OK thank you. Not adding it as a part was the problem.
RE: Prusaslicer 2.9 and helper disks
I am about to go insane. I have the same problem and searched the whole internet about that already, but adding it as a part not as extra object is still not working for me on Prusa Slicer 2.9.0. I mean I believe you if you say "The process hasn't changed in forever", but have you any idea what I might be missing?
I right click the Shape-Box Object and select "Add part" -> "Gallery" -> "helper_disk.stl"
RE: Prusaslicer 2.9 and helper disks
Your screenshot looks like it is supposed to look for the helper disk. What is not working for you?
RE: Prusaslicer 2.9 and helper disks
I am about to go insane. I have the same problem and searched the whole internet about that already, but adding it as a part not as extra object is still not working for me on Prusa Slicer 2.9.0. I mean I believe you if you say "The process hasn't changed in forever", but have you any idea what I might be missing?
I right click the Shape-Box Object and select "Add part" -> "Gallery" -> "helper_disk.stl"
This is normal for using the helper disks. The perimeter will follow the union of the original object and the helper disk. If this is not what you want, and you want to preserve the original perimeters, you may need an advanced technique like what is demonstrated in this video:
I have not (yet) experimented with this technique, and it is being demonstrated using PS 2.7.1 in the video. Hopefully the technique still works using PS 2.9.0...
See my (limited) designs on:
Printables - https://www.printables.com/@Sembazuru
Thingiverse - https://www.thingiverse.com/Sembazuru/designs
RE: Prusaslicer 2.9 and helper disks
Thank you very much for your quick response 🙂
What I expected was like the perimeters would still be there for each part.
See post here: https://forum.prusa3d.com/forum/prusaslicer/clip-multi-parts/#post-685028
In my case the parts kind of fuse together. I would expect the corner of the Shape-Box would still be printed, so it is easier to cut off the helper disk along the corner perimeter after the print.
RE:
For the layer that is directly on the bed you can't see the filament lines anyway on an MK4 or on any other printer if your first layer calibration is good. Just use a deburring tool to cut off the unwanted part of the disk. It is just one layer high and you won't see much of a difference. At least that has never bothered me when I used this technique and I mostly use the textured sheet which blurs the lines. You can also try to use "only one perimeter on first layer" to make the difference even smaller.
If you add a localized modifier part you cannot add a brim to just that modifier part. You would have to add a brim with "0" as separation gap distance to your whole part to create a brim with some grip on the part.
RE: Prusaslicer 2.9 and helper disks
Thank you very much for your workarounds and tips!
Of course, once you’ve clipped and deburred everything, you normally can’t see the perimeters anymore if the bed is properly leveled and the right filament is used. For this project, I’m using orange filament with a PEI sheet, and unfortunately, the perimeters are visible there—especially since it’s also the top side.
"This is normal for using the helper disks. The perimeter will follow the union of the original object and the helper disk."
I find it unfortunate that the option mentioned in the other post (clip multi objects) no longer exists. I’m not a fan of changing something just for the sake of change without any real benefit—it only makes things unnecessarily complicated in my view. After all, the “helper-disk” is precisely intended for that purpose. Or at least a modifier would be helpful to preserve both perimeters
As final solution I will add a tiny Shape-Box with 2x2x0.3 mm and add the "Skirt and Brim" modifier with 5mm width. That will do the job :).
RE:
That is a good idea! I thought if you did this the brim would interfere with the other part, but it does not. Good to know! 🙂
Just shows the importance to keep trying things out! 🙂