Sweep Solid Body 3D Prints as a Hollow Empty Shell

[mnpaharvey1]

Under the solid menu item, I sweep a gear with a circular hole in the center along a straight line with a 45 degree twist, supposedly to produce a solid body. However when I 3D Print it using the Fusion print facility, the result is a hollow shell with no interior pipe. There is some info on solid vs hollow sweeps on the net but it does not relate to the current version of Fusion 360.

[jeff_strater]

You'll have to share the model to get more help.  But, I would guess that the problem is likely to be in whatever 3D slicer you used to prepare the model for 3D printing than Fusion itself.

[mnpaharvey1]

Thank-you for your reply Jeff. I 3D printed it using the Fusion 360 print facility and by exporting it as an stl and using CURA, with the same result except the stl file was even worse. The .f3d file is attached. Is this the one you need?

[jeff_strater]

Thanks for the model.  The Fusion model looks as I expect, using Section Analysis:

I exported to STL using "Save as Mesh", and then imported that into Cura 5.0.0, and performed slicing.  It looks OK to me.  The central channel is there, and the solid parts are properly filled with support structure.

I even changed the orientation to a more reasonable one (on its end), and it still looks OK to me.  Is this not what you see?

[HughesTooling]

The standard Normal material setting does not work well with a small part like this! The infil is very sparse, the Gyroid infill pattern does not seem to work well even if you increase the density to 90%.

But this is what I get using rectilinear pattern. See attached file. Setup1 is rectilinear and setup2 Gyroid both set to 90% infill.

Mark

[mnpaharvey1]

Thank-you so much for your help guys. Jeff you were dead right about it being a slicing problem. In CURA I had checked spiralize outside diameter, which seemed like a good idea at the time. My guess is that this created a no layer vs layers compatibility issue between exterior and interior so that the interior did not print. Anyway, unchecking that corrected the printing problem. Might be an idea the pass this question along to CURA?

Another issue, the bed size for the default Fusion FFF 3D printer is very much larger than usual for noncommercial printers. It says it is not editable in the printer selection menu but it is using the settings menu. If it is not adjusted, I found that the item trys to print way off base.

Best wishes Mike Harvey