Refine Detail in SketchUp Circles & Arcs
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- Опубліковано 11 жов 2024
- Tyson shows multiple ways to change the number of segments in Circles, Polygons, and Arcs.
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It may be basic but I still learnt something- didn't know about ability to type 12s. As a further tip, it is useful to use a number of segments that divide into 360, such as 12, 24, 48, 96, etc. This way you will always have a point on the cardinals (x & y axis) at the extreme sides; useful if you want to align or reference from the sides.
We always use 66 segments and 33 segments for the semicircle. We need the function every day for our skatepark designs.
Best regards
Thanks for this one.
all the subtleties of all instruments.
is there a way to set up the amount of segments beforehand
Okay, interesting how you do it? But how do you access the dialogue box? This is something I need to know to be able to change the number of sides of the circle. So where and how do I open that dialogue box?
Open the Entity Info panel by clicking the right-pointing arrow next to Entity Info in the Default Tray or, if the tray is hidden, by selecting Window > Default Tray > Entity Info. On Mac, select Window > Entity Info.
Since that we can export to 2d graphic (dwg/dxf) and therefore use the file on a cnc machine, what would be in your experience the number of segments needed to cut a perfect circle?
That would really depend on the diameter. If you really need smooth curves you should look into parametric cad software that stores curves as a mathematical function. That is, if your CNC machine supports curves
@@adrianscarlett, I use SolidWorks for objects and SketchUp for architecture. I usually combine both models in Keyshot for rendering. When it comes to the materialization of an object, I automatically have the solidworks parametric definitions. I've never sent models exported from sketchup to cnc. I thought the question was pertinent given the theme of this video. The idea would be to collect a testimony from someone who is used to doing it and what kind of parameterization, segments, they use.
A 3D export includes arcs and circles as true arcs. If you are going to CNC do a 3D export of your 2D linework.
@@aarondietzen2995, Thanks for the input. I've found it more complicated. When I open the cad file, I still see the segmentation that was chosen in sketchup.Have you tried to increase the number of segments and checked the number of associated lines of code? One pass in a section of a circle in CAD and 96 segmentations in a circle in sketchup. I think it will be like creating a rhythmic song with the cut instead of a single long note. Depending on the material, I'd say it can even grind it. This is just me theorizing and trying to gather as much information as possible to be able to do it when my CNC arrives. It might be best to address the issue in a forum. 🙂
What is the difference between a polygon with loads of sides and a circle?
Circles have adjacent faces smoothed.
Nice one. I find the best way to get smoother arcs and circles is to close Sketchup and open Rhino.
If you get smooth surface when changing to a solid object, why bother?
If you know that the circle you draw, vill be used with "follow me" tool, then it will be better with less sides.
This is absolutely right for cases where low polygon count is useful, to keep the model small or simple, particularly follow-me objects. Other times you may want a large arc or cylinder base, where the edge will be visible - such as a curved building. Here you might need to see a visually correct curve and not flat edges. It all depends on what you are drawing at the time and its ultimate purpose.