My Personal Most Ambitious Single Print to Date  

RE:

Your .3mf file shows that there are still errors in the STL.
click on the picture below to expose the marker!

Slicer says it has Auto repaired 1054 errors, and there are 2 remaining open edges.

if you are using windows, clicking on the orange triangle in prusa slicer, should repair the errors,

regards Joan

RE: My Personal Most Ambitious Single Print to Date

I mostly work on a Mac, I didn't know you could do that. I was able to open it on a Windows machine and do the repair, thank you. I found the STL repair on the Mac version of PrusaSlicer and even though it said it successfully repaired the file, the errors remained when I reloaded with that version. I'll have to report that bug. Thanks for that bit of advice!

Any suggestion on the settings I have loaded?

Posted by: @joantabb

Your .3mf file shows that there are still errors in the STL.
click on the picture below to expose the marker!

Slicer says it has Auto repaired 1054 errors, and there are 2 remaining open edges.

if you are using windows, clicking on the orange triangle in prusa slicer, should repair the errors,

regards Joan

 

RE:

> I'm printing at .15 layer height. 
If you are going to use filler, then sand it and paint it, then this is an overkill, stick with 0.20mm, it will noticeably increase print speed.
Example such print on Mini https://www.printables.com/model/293680-human-skull-anatomically-correct-re-cut/comments/1196091  

You may want to use Perimeter generator: Classic to get better curves.

>I'm printing 3 layer walls. 
Depends how hard you want to sand it, in general 4 permieters will make it more sturdy and less prone to getting warped after print.

> I'm using 15% adaptive cubic infill.
Whatever you feel best.

>Is my support structure enough? 
Personally I would print it upside down, this way it uses less infill especially inside the model.

Also I suggest decreasing angle from 50 to 25 or using manually painting supports.
Or if you do not care about supports inside then probably laying flat on the back of the hair is better  maybe? (so that other external parts in front face do not need any supports)

You may first want to print 25% scale model to see how it goes.

RE:

Please don't report that as a bug, it isn't.  The windows version can make use of a built in api bundled with windows that is based on the old netfabb repair tool, which was one of the better ones.  Unfortunately it in only available to the windows versions. There is nothing Prusa can do about it.

The project has too much support, the automatic option is too aggressive.  Always has been.  Something more along the lines of the attached would work.  Theres several tweaks, besides support making use of painted on areas for enforcement, an extra perimeter will help, theres a modifier added to remove most of the superfluous solid infill that PS adds that can cause problems for most of the height etc.

Have a look at the changes.  You could probably control the seam positions better if you played around with seam painting too but thats time consuming to do.

Oh and the project contains the repaired model.

RE: My Personal Most Ambitious Single Print to Date

Thank you Neo. I understand and won’t report the issue. Guess I’ll fire up the Windows machine from now on when I see this. On a side note do you know if there is a better STL repairer for the Mac? 

I was looking over your settings compared to my original and and found some minor but interesting (at least to me lol) changes;

• Max Volumetric Speed you have 12 I had 15, is this just simply from past experience?
• Cooling you have Min fan speed 100, but max is 95. I had 100 and 100. Is there a hidden trick there that max is lower than min?
• Slow down if layer print time is below 5, min print speed 25, I had 15 and 15 respectively. I’m guessing this is from past experience?

Posted by: @neophyl

Please don't report that as a bug, it isn't.  The windows version can make use of a built in api bundled with windows that is based on the old netfabb repair tool, which was one of the better ones.  Unfortunately it in only available to the windows versions. There is nothing Prusa can do about it.

The project has too much support, the automatic option is too aggressive.  Always has been.  Something more along the lines of the attached would work.  Theres several tweaks, besides support making use of painted on areas for enforcement, an extra perimeter will help, theres a modifier added to remove most of the superfluous solid infill that PS adds that can cause problems for most of the height etc.

Have a look at the changes.  You could probably control the seam positions better if you played around with seam painting too but thats time consuming to do.

Oh and the project contains the repaired model.

 4688a42e-fertility_idol-stl_neo.zip

RE: My Personal Most Ambitious Single Print to Date

That's weird about the fan speeds as I didn't touch those.  When I opened your project those are the speeds PS is showing me and they still are that when I open the project I zipped up on my machine -

and on mine its still set to that.  

The only speeds I changed on the filament cooling were the ones at the bottom for cooling thresholds.  Slow down if layer print time is below and Min print speed.  Slowing down too much can cause problems with thinner  tower like areas as the nozzle stays in the area too long so does the opposite of what you want and slowing down lower than your minimum print speed usually isn't called for with something like pla.  And yeah those 2 are from experience.   
While your settings probably wouldn't be a problem on this model its become a reflex to set those now.

The max volumetric speed of 15mm is lets shall we say optimistic.  12mm is a safer limit with most pla's.  Not sure about these 'new' pla variants that are coming out for high speed printing but for rest I stick to 12.