Simplify3D vs Autodesk Netfabb

[pickit2]

My 3d printer packed in - my work load is too great to spend any time on a fix.
new pcb on order, 3 weeks or more.

the thing is a small job I was working on I thought I would run in Simply 3d.
when I imported the file "it had a lot of errors, the original file looked good to me, so
I installed Autodesk Nettfabb 2020 and it shown only a few, minor errors.

here is the file, I was using.

Is anyone else having issues with 3d software.

[optikon]

I opened it up in spaceclaim and ran some of the repair features.

No issues found, it looks good.

[towlerg]

Very new to this 3d printing lark but Simplify3d thinks you have non-manifold segments and self intersecting surfaces - which I'm guessing isn't good. PrusaSlicer slices it but something goes horribly wrong.

[sfiga69]

pickit2 your problem is not to use netfabb or symplify3d, your problem is how you did the drawing.
I suppose you have created the various simple blocks that you have approached / overlapped,
in this way, due to small inaccuracies, the meshes become confused and create open solids errors.
These errors made me lose many days in some drawings I made but I found a simple solution to the problem.
I state that I use rhino6 to draw, netfabb 5.2.1 to check if there are open solids and symplify3d as a slicer.
Returning to your design, in 30 minutes, I loaded it into rhino, converted the mehs into nurbs, extracted the main face outlines and with these I recreated the single simple blocks.
At this point I added parts so that the individual blocks would interpenetrate, reposition and make a Bolean union.
exported to .stl and loaded into netfabb .... voilà no open solids problem.
P.S. some of the problems that can create open solids will show them in the images that I am attaching to you.

[pickit2]

Yes I think I need to update my skills.
I think the old software I was using with the printer. was more forgiving than the new.

Netfabb is more forgiving than Simply3d
I done some more work on the model and I think I will fix it before my replacement pcb gets here.

This is what it looks like in Netfabb. plus the file.

[sfiga69]

these are 2 of the open solids
they are missing due to a bad mesh generation by the graphic sw you use.
For example in rhino5 the conversion to stl was very approximate and generated many open solids. In rhino6 it seems that the conversion has improved a lot.
A 3d drawing converted from rhino5, created many open solids. The same design carried in rhino6, the conversion was perfect.