Hi,
Still learning Sketchup. Is there a way to the change the default segments for circles and arcs/curves? I find myself to always increase it manually after each drawing, and I need to speed this up.
No, the default cannot be permanently changed. You can type in the desired number of segments before you start a circle or arc, which will set the default segment count for the rest of that session. But it will reset in the next session of sketchup.
Actually there was an old discussion and extension on Sketchucation forum. The very last post from @TIG in this topic:
http://sketchucation.com/forums/viewtopic.php?p=352084#p593781
I have not tried, though…
Thanks alot … this method is a good alternative.
Thank I will try that extension and see if it still works in v2021
I tried the extension, TIG-CircleArcDefaulter (TIG-CircleArcDefaulter_v5.0.rbz), and it works great on SketchUp Pro 2021. Thanks again. Now I have the option to change the default number of segments.
Then you might need to change the “solution” mark to that post were it was solved… 
You are right, and I just did that. However I still thanks endlessfix for his workaround, it was a good tip nonetheless.
You can also edit it after drawing it, providing it remains a circle (or arc) and has not been exploded.
Hmm, so annoyoing that it cant be changed. It’s already set to a lower than required number…
Oups Sorry my answer is wrong :
(Just start a new project.
Select the Circle tool
Type 48, then draw a circle.
Delete this circle.
Save as a model> default model
Now your model by default naturally create circle with 48 segments)