Gday guys just need a little help here. I would search but don’t even know what terms I would search for. Basically, I want to create a headlight bucket for an RC car I’m going to get 3d printed. The rectangle will be the top (18x22mm) and dropped about 5mm below the rectangle will be an 18mm dia c…

Geo, I was going to ask "How do you get the transition to be symmetrical? Try as I might, I always get the following: " But your comment about the cardinal points means I need to rotate the circle so the circle’s edge is parallel to the sqaure’s edge. It’s odd SketchUp does not create a nice symmet…

Thanks for reply. I think I worked out the first bit, I didn’t have it as a 3d object, nor held the Alt button. Still not getting expected results. I increased circle segments from 24 to 48, still didn’t get results. [image]

Here is my 1c: I used the Sandbox from Contours tool: [image] Anssi

And after you’ve learned how to do it by hand, you can speed up the process with a plugin like Curviloft (Fredo6)… [image]

[image] jim_foltz: It’s odd SketchUp does not create a nice symmetrical transition when creating the geometry in the more natural SketchUp way (without rotating the circle.) Not being a coder, I wouldn’t know if one can program neatness. Thankfully, there’s a way to encourage it. :grin: Tha…

Thanks for the help everyone. I downloaded Curviloft as you suggested Cotty, it worked brilliant after playing with the settings. [image]

Then there is the good old hand-stitching method. Note that I used a circle that had 4 times the segments of the corner fillets so the shape could be created without triangulation. Time about 15 minutes. [image] Anssi

To have rounded corners at the bottom may seem to make hand-stitching needed. But the shape is part of a transition from rectangle to circle, the base cut off by an exploded “Create group from slice” via section cut. This reduces the time by maybe 11 minutes, leaving only 4 minutes, still only basi…

Another way to do it - much quicker and doesn’t use any plugins: 1 - draw a circle 2 - split it into quarters and delete 2/3 of it 3 - pull the quadrant up 4 - use the scale tool to select the inside corner of the top quadrant and scale it (eg by 0.1) 5 - draw a vertical line from the outside e…

Push/Pull a circle from a rectangle

SketchUp

Geo July 19, 2015, 12:39pm 2

While moving the circle SketchUp automatically triangulates the rectangular face.
Eraser+Ctrl soften/smooths the edges.

Notice the orientation of the cardinal circle segments, such that they are parallel to the edges of the rectangle.

1 Like

Square to circle "adapter"

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Push/Pull a circle from a rectangle

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