![]() ![]() ![]() If you’d like to keep a SketchUp-like workflow or are a pen & paper person, then I’ve also been having a lot of fun with Shapr3D for sketching out ideas quickly. Being able to work parametrically is a huge benefit, and the models are more compatible with other tools to boot. I’d recommend moving to more full-featured tools like FreeCAD or Fusion360 which are available for zero or very low cost. While SketchUp is great as a free tool and has a huge number of videos or guides available, I quickly butted up against limits like this one. That means they can give the volume for a complex shape because it has ‘stuff’ inside it. Most other CAD tools have these features but create Solids - either once surfaces are joined together at the edges to enclose a volume, or by dedicated tools which combine or subtract simple 3D shapes from each other. It also makes editing or working with existing objects quite difficult, especially once they become complex. That means that a cube in SketchUp is made up of six Faces around an empty space. The easiest way to see this is when you make a ‘circle’ - you can see the edges that approximate a circle shape if you zoom in. It’s a polygonal surface modeller with some features for editing the lines which make up each surface. This is because SketchUp isn’t really a CAD tool as they’re typically known. If you make a ‘hole’ in any of the Faces, it cannot determine the remaining volume. SketchUp will only give the volume for completely ‘sealed’ objects inside the same Group or Component. ![]()
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