Creating a file that I modify in FreeCAD
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Creating a file that I modify in FreeCAD
Hi guys. I downloaded a file in Solidworks format. I converted to a Step 214 File, so I could import it and modify it with FreeCAD. Using the Part Workbench, I tried to convert the file into a solid, and I was given the following message “Cannot convert because Shape is not a shell.”
I tried then exporting the original file as an STL and importing it, so I could convert it into a solid from the mesh, and was given the same message. I tried also to refine the shape, to see if this would work, and it didn’t
Lastly, I tried making a simple copy and converting that to a solid, and that didn’t work either. My goal is to be able to modify the file so I can add different accessories to the weapon, so I can print it out for my Punisher action figure. Thanks!
I tried then exporting the original file as an STL and importing it, so I could convert it into a solid from the mesh, and was given the same message. I tried also to refine the shape, to see if this would work, and it didn’t
Lastly, I tried making a simple copy and converting that to a solid, and that didn’t work either. My goal is to be able to modify the file so I can add different accessories to the weapon, so I can print it out for my Punisher action figure. Thanks!
- Attachments
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- Scar.FCStd
- (374.31 KiB) Downloaded 10 times
Re: Creating a file that I modify in FreeCAD
From what I've seen here, Steps are already solids.
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Re: Creating a file that I modify in FreeCAD
CheckGeometry shows lots of errors. You may try Part->ExplodeCompound, and investigate the components - or export a sound model.
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Re: Creating a file that I modify in FreeCAD
I did CheckGeometry and I didn't see any errors or invalid shapes. Am I doing something wrong? I'm using the following version of FreeCAD
OS: Windows 10 (10.0)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.19263 (Git)
Build type: Release
Branch: master
Hash: c4ca00a1d5b7922ef1d2ae3e820bb34ffdb64d9f
Python version: 3.6.8
Qt version: 5.12.1
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/United States (en_US)
OS: Windows 10 (10.0)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.19263 (Git)
Build type: Release
Branch: master
Hash: c4ca00a1d5b7922ef1d2ae3e820bb34ffdb64d9f
Python version: 3.6.8
Qt version: 5.12.1
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/United States (en_US)
Re: Creating a file that I modify in FreeCAD
In the settings of CheckGeometry you can activate BOPCheck.
Exploding the compound worked here too.
A Sketcher Lecture with in-depth information is available in English, auf Deutsch, en français, en español.
Re: Creating a file that I modify in FreeCAD
Can you share the STEP file to ease investigation?
Re: Creating a file that I modify in FreeCAD
I checked your attachment, and found it is a compound of different parts in geometric meaning.
I am not expert, so I donnot know the exact meaning of term "compound" in STEP and FreeCAD. By "geometric meaning", I mean you can break it into different solid parts, and there are lots of gaps between these parts.
FreeCAD "Convert to solid” command can only handle contiguous and closed geometric object. But your model is not contiguous.
In above example, there is 1 object named "Fusion" in data-structure meaning. But in geometric meaning, there are 2 objects, "Cube" and "Cylinder".
"Fusion" is not contiguous. "Cube" and "Cylinder" each are contiguous. Thus "Fusion" object is a "compound" of "Cube" and "Cylinder" in my meaning. If you use "Convert to solid" command onto "Fusion", you will fail and get the error msg "Shape is not a shell".
Re: Creating a file that I modify in FreeCAD
ChrisB solved it for me. Thanks to everyone for their suggestions. I love this forum!