"Spiral vase" mode and Modifier  

RE: "Spiral vase" mode and Modifier

Looks like it works with non-vase mode, so perhaps a defect that needs to be posted on GitHub if you want them to fix it.

Meshmixer is an easy solution to adding a hole in a part.

RE: "Spiral vase" mode and Modifier

spiral vase mode is for printing continuous path parts . it prints as a winding ramp with no layer steps. holes cause gaps in the path and would prevent a vase mode print 

RE: "Spiral vase" mode and Modifier

I can create a part with a hole that Spiral Vase mode works fine with. 

There seems to be a function inside Plicer that when you add a modifier the code thinks there are now multiple parts, and that violates the vase mode rules. 

Worse, once you hit that error, deleting the old part and modifier, loading a new part fails due to the multipart error still flagging a non-existent problem.

RE: "Spiral vase" mode and Modifier

I struggled with this for a few days, trying to piece together notes from a few threads. I got it to work by doing 2 separate slicings and combining some of the GCODE. I turned my adventure into a blog post in case it helps anyone else.

https://www.tribalrhino.com/2020/06/vases-mode-with-holes-in-bottom.html

RE: "Spiral vase" mode and Modifier

Its not the hole itself that is the issue with modifiers in vase mode.  Its the way modifiers work at all.  Prusa Slicer treats a modifier area as a separate slicing problem so when you place a modifier, internally it becomes a separate model to work out for slicing.  As such its not allowed for a vase mode print.

RE: "Spiral vase" mode and Modifier

@neophyl

I ended up here because I wanted to print something in vase mode with a hole in the bottom - like the OP. I tried modifiers and per object settings in the slicer but, like you mention here and in other threads, it won't work. The only way I could get the hole in the bottom was by chopping up a couple of GCODE files. so I thought it might be useful.

RE: "Spiral vase" mode and Modifier

@nigel-j

If you had used a modelling program to add the hole into the original model, something like Blender for example or Meshmixer as Tim suggested to generate a new stl file, and then sliced it you shouldn't have to do anything special.  Merging gcode is not really the recommended way lol.  More chance of something going wrong, especially if you aren't that familiar with gcode.

I know all the tools that you can use is Prusa Slicer are great and sometimes they come in handy for a quick change but there is really no substitute for learning at least the basics of some 3d modelling program.  You don't have to become an expert or anything. 
There are far far too many models out there on places such as Thingiverse that have issues with them and knowing how to fix them will come in handy at some point.  Also you get to the point when none of the models are quite what you want so the ability to change them, even slightly is a massive plus.  Like adding a hole.

RE: "Spiral vase" mode and Modifier

Agree on all the points and I have a lot less hair than I did a week ago 🙂 I certainly wouldn't recommend it either, but it was the only way I could print a pot in vase mode with holes in the base.

An STL with holes in the base won't print in vase mode either, as Prusa Slicer (and I guess most slicers) ignore anything by the first external perimeter. If you don't use vase mode, you get z-scaring, and I really didn't want that. Plus, in non-vase mode, if you don't get the wall thickness exactly right, you end up having to fiddle the settings in the slicer anyway and that sounds like a reproducibility nightmare as well, especially if your object is non-uniform as height changes.

I wholeheartedly agree that you should be able to add a modifier and have part of your model be ignored by Prusa Slicer, or actually allow you to override the vase mode option (which is on none of the options) like you can perimeters, infill per object, then you could do a similar thing like you can with MMU prints and load the 2 parts in together, print the base in a normal mode and the rest in vase mode, or change the parameters at a certain z-height... but none of these options exist or work.

RE: "Spiral vase" mode and Modifier

Do I have to go back to S3D?  The problem with 'vase mode' is that if you really want a waterproof vase, the base needs to have some overlapping layers.  In S3D we can mix and match using processes - I love using PrusaSlicer ( actually I use SuperSlicer )  but maybe only S3D can provide this functionality - a waterproof vase!

BTW to make it waterproof - 2 bottom layers with big overlap, then a layer above that with 5 perimeters(no infill) to seal the edge - wish I could do it in PrusaSlicer

RE: "Spiral vase" mode and Modifier

You can increase the extrusion width to improve the  strength of Vase mode, it also makes vase mode more tolerant of steeper slopes,
you should be able to do 0.8mm  Extrusion width with a o.4mm nozzle
regards Joan

RE: "Spiral vase" mode and Modifier

Thanks @joantabb - Im actually  using a 0.8 nozzle so the vase sides are fine but its always the joins at the bottom that give me a challenge

RE: "Spiral vase" mode and Modifier

Hi Simon, 

have you tries 1.2mm extrusion width with the 0.8mm nozzle? 

have you seen this video on making vase mode prints water proof??

regards Joan

RE: "Spiral vase" mode and Modifier

You can do this easier in cura. It will allow holes in the base natively. You can also use vase mode stacked on top of normal models if you are willing to modify the definition file. https://github.com/Ultimaker/Cura/issues/7893