Model "has errors" when stl exported to slicer

[Anonymous]

Hi

  I am a complete newb to Fusion 360. I started my 3D experience with sketchup but was completely frustrated by it always creating holes in the mesh as I designed. It also merged things together permanently. I had a lot of difficulty getting my exported STL files into my Flashforge 3D printing software (flashprint)  error free. (I did manage it eventually but it almost drove me insane)

  I have designed a test design in fusion 360 to see how to do some of the pattern things I need. I thought I'd just send it to my printer software. I downloaded meshmixer. It reported many errors due to my design having a lot of small design features. I could only get this to disappear by setting the feature size to 0. Once I did this there were no more visible errors so I exported the stl file.  Flashprint reported that the design had errors.

   With all my sketchup experience I homed in on the area I suspected was causing the issues.

   The problem area is around the curved bricks on the arch. Fuion360 does a MUCH better job of cutting away the bricks. at the arch. However when I sliced my design in flashprint the curved bricks appear to be full of holes. The same thing holds for the rectangular  bricks that were cut away at the arch. Meshmixer shows them as OK

   I;ve tried looking at other posts and tried both ascii and binary STL files with the same result.

Also I can't work out how to include my cloud based design in case someone wants to take a detailed look at it. Could someone tell me how to find the file so that I can attach it.

[davebYYPCU]

Export the design to your hard disk, from the folder icon next to the Save icon,

once saved locally you can attach it to a post  a little lower down the post page, (similar to email packages.)

Sounds a bit like the slicer on the printer, not Fusion or Meshmixer, but attach the file we can check it out.

[Anonymous]

Hi

    Thanks for getting back to me so quickly. The only reason I don't think its the slicer is because I went through so much hassle with sketchup with a similar design and eventually got a clean fie that the sliver was happy with.

   I hope I;ve attached the fusion 360 file and the stl. THe fusion file is 28M......

   Regards

         CJ

[PhilProcarioJr]

@Anonymous

Is there a reason you didn't combine everything together before exporting the .stl file?

Also your going to have A LOT of problems working with files like this......

[etfrench]

I didn't have any problem exporting the entire file as stl (Select the topmost node in the browser and click on Save as STL).  Refinement was set to high.  Slic3r didn't report any problems with the stl.  It did take a while to load because of the large size, 27486 facets.

[Anonymous]

Hi Phil

  the reason I didn't combine everything is that I didn't notice anything in the 20+ training videos I've done so far about combining.

Could you please give me  a pointer or two in case it fixes my issue.   Also perhaps elaborate on the issues I'm going to face.

  This test design only has "bricks" on one surface. I intend to surface much more if that's what you are getting at.

  regards

    CJ

[Anonymous]

HI

  Unfortunately the only slicer I have access to is the one that came with my Flashforge Creator pro printer. It would appear that this particular issue lies with the slicer if other slicers slice clean.

I tried  the high setting but flashprint still complains and the top slice still looks like the picture above.  Flashprint is not too helpful in indicating where it thinks errors are, and repairingthe model produces quite a few strange triangles in the vicinity of the wonky surface. 

   Interesting to discover that I can completely skip the meshmixer step and write the stl directly .  That's what comes of following videos. 🙂

   Maybe I'm missing a combine step as indicated by Phil.....

  regards

     CJ

[etfrench]

Slic3r also worked fine with your file.

Slic3r is open source and free.  There are quite a few sites that tell how to use it with your printer.  Combining all of the various bodies and components for export is as easy as right clicking the top node in the browser and selecting Save as STL.

[TrippyLighting]

What you are describing ins NOT the combining @PhilProcarioJr is talking about. It simply outputs all bodies/componets in a single .stl file. Then your slicer will have a lot of wok to do figuring out how to eliminate the internal and unneeded .stl mesh elements.

It is much better t use the modify->combine to combine all solid object into one single body before exporting into a .stl. It also will be a smaller file size.

[PhilProcarioJr]

@Anonymous

As @TrippyLighting said your going to want to combine all these bodies using the combine tool. For one thing you will have cleaner stl files and eliminate over 90% of most issues. Aside from all of that Fusion doesn't deal with high body counts very well. Sooner or later your going to make Fusion unstable.

[Anonymous]

Hi All

   The "combine" removed the errors on import to flashprint. However the curved bricks still have the same surface patterns showing,

Not an autodesk problem I suspect.

  THanks for all your help

            CJ

[etfrench]

Slic3r doesn't show any errors in the curved bricks.

[Anonymous]

slicer for fusion 360 was unable to process this model some mesh issues can be fixed by using the shrink wrap tool in the modify form panel