Vase mode, "Detect thin walls" and Travels  

if the shape is open you would expect the slicer to start each layer at the end of the previous layer, but PE will not do that!

Because that part of the layer has not yet had time to cool and printing over would distort it.

Cheerio,

RE: Vase mode, "Detect thin walls" and Travels

Posted by: @diem

if the shape is open you would expect the slicer to start each layer at the end of the previous layer, but PE will not do that!

Because that part of the layer has not yet had time to cool and printing over would distort it.

Cheerio,

Hi Diem,
thank you for your quick reply, but I disagree:

• With Simplify3D is truly easy to obtain the desired results;
• With proper print parameters (ex. extrusion temperature, cooling, etc.) is truly possible to print on just printed parts without damaging them (it is what I do everyday exactly with Simplify3D on 0,4 mm thin "ribbons".)

Does anyone have any ideas?

So use Simplify3D.

Cheerio,

RE: Vase mode, "Detect thin walls" and Travels

@pasubio

Can you provide a Zipped up .3mf project file, exported from PrusaSlicer? I will take a look and see if I can help.

Note: the .3mf file must be Zipped up in order to post it here on the forums file server.

Regards

Swiss_Cheese

RE: Vase mode, "Detect thin walls" and Travels

Hi Swiss_Cheese,
thank you so much for your attention!

Here attached you will find a project containing a 0,4 mm thick spiral, the default setting will permit you to print this object quite well, but… if you try to use vase mode to avoid useless nozzle jump you will start to pain in order to print the object.

Please note that:

• Yes, generating STLs with different thickness can partially help you to print the object, but the PE working logic can't be avoided.
• This spiral is a simple object, while using complex  ribbon shapes you will experiment more problems.
• I do not like to accept, as a solution, to print this kind of shapes with two perimeters when the thickness can be achieved with a single track 😉

RE: Vase mode, "Detect thin walls" and Travels

Meanwhile, someone has rised a related, if not the same, issue on GitHub:
https://github.com/prusa3d/PrusaSlicer/issues/7447

RE: Vase mode, "Detect thin walls" and Travels

Your 3mf only has "generic" print, filament, and printer profiles, so it's a bit of guesswork. 

I was able to print a single line in vase mode by switching external perimeter, perimeter, and first layer extrusion width to 0.39. I think that's what you were trying to achieve, not sure though. 

RE: Vase mode, "Detect thin walls" and Travels

I printed it no vase mode, no detect thin walls, and with no crossing perimeters, and similarly I printed it @ first layer 0.38, no elephants foot compensation, and external perimeters 0.38. In PrusaSlicer 2.3.3

This is the Path of Travel

(No Spiral Vase mode)

It prints back and forth from one end to the other.

I printed it out of Overture PETG.

I hope this helps.

Swiss_Cheese

RE: Vase mode, "Detect thin walls" and Travels

Hi fuchsr,
thank you for your reply.

Pay no attention to the "Generic" in the name, I just stripped the unnecessary things in the settings, but this issue is unrelated to specific filament or printer nature.

Anyway, following your suggestion, I found that I can't achieve the desired result, while using vase mode, just setting 0,38 mm value for "first layer", "perimeters" and "external perimeters".
I'll try to do some prints and measure the results, ialso trying with different thickness in order to understand if one can obtain some kind of method.
Thank you!

RE: Vase mode, "Detect thin walls" and Travels

Posted by: @swiss_cheese

(No Spiral Vase mode)

It prints back and forth from one end to the other.

I printed it out of Overture PETG.

Thank you Swiss_Cheese,
looking at the picture it seems to me that there is an unnatural jump in the inner side of the spiral, those jump should be avoided in the desired results.

RE: Vase mode, "Detect thin walls" and Travels

Here.

  I printed it there is no unnatural jump.

Shun the nonbelievers 🤪

I sense that you are a nonbeliever, I normally shun the nonbeliever, 🤔 but in your case I think I'll go for conversion. since I haven't had my coffee yet. 😉 

I printed this two ways, both came out equally well

Since Vase mode seems to be what your looking for hes the Vase mode Photo.

Try to keep in mind how close up this is, and that it's printed in PETG with basically default settings.

Enjoy and good luck 

Swiss_Cheese

RE: Vase mode, "Detect thin walls" and Travels

Hi Swiss_Cheese, thanks for your time!
But don't call me "nonbeliever", I was just looking at the jumps in your first image 😉
Truly nice print, I can obtain the same with TPU and Simplify3D, so I hope for the future to obtain same results in PE as easy as with S3D.

About that, the user bubnikv just wrote on GitHub that We are actively looking into ways of improving thin walls and gap fill for the next major release (2.5), so it's clear that PE should be improved on this matter ( https://github.com/prusa3d/PrusaSlicer/issues/7447 )

Happy printing!

RE: Vase mode, "Detect thin walls" and Travels

@pasubio

I was only teasing with the nonbeliever thing, I figured it was so over the top you would get the joke.

I did thin wall also and it looks really good, I printed with a 0.4 nozzle and it came out at 0.42 thickness, but I didn't have elephants foot on, and I didn't tune anything as I normally do I printed those in 14min. The spiral vase one printed in 19 min at 0.55 thickness by my calipers. They both printed great, for the record I print a great deal of TPU and you can already do this in PrusaSlicer, all the tools are there. you do have to set the print up for success (Tune it) but it's easy to do I showed you the travel path of both that hop you saw in the one was just that it was designed to stop the build up at the very inside of the print. I could print this in Ninjaflex durometer 85A no problem in vase mode no thin walls.

Relative to the GitHub issue, don't wait for a button for that, start learning it now. I'm active on GitHub, a lot of people post issues there that aren't really issues, they just don't know what they can do with the software. I'm all for improvement.  My advice, stick with 2.3.3 for now.

Good Luck to you, sorry I couldn't help you out.

Swiss_Cheese