I just managed to get my first furniture objects done. Now I need to find out, how to make a box with rounded edges, so it can work as surface or pillows of a couch. Yes, and that is my question: how to create something like a pillow? Thanks.
The following may offer some guidance:
The first video is highly recommended; it is by Phil Marshall who has contributed a lot of information on this forum and it is a valuable tutorial for creating just what you have requested:.
[SketchUCation thread on creating Pillow and Blanket - CLICK HERE][1]
A N D
You can probably save yourself some time and find worthwhile examples at the 3d warehouse site (a brief search for “pillow” yielded more than 2,800 results):
Note that the title was edited slightly to reflect the request for Pillow and the category has been changed to Tutorials.
[1]: Pillow and blanket • sketchUcation • 1
Years ago I made some cushion tutorials.
That’s a great tutorial, @catamountain. I had come across this info a while back, but I didn’t know where to find it.
Thanks jvleearchitects, though we may not have answered the OP’s question of how to round over the edges of a box 
.
Using the Follow Me tool is yet another option to make a rounded edge profile. And there is the Rounded Corner plugin by Fredo6…
Well, in that case, how about this tutorial?
All responses are great in their own ways, and there is a lot for me to watch and to learn.
The best answer for my question has been provided by jvleearchitects with his last posting to this thread (right above my answer here).
PROBLEM
There is just no tool by the name “Round Corners” that I could find anywhere in Sketchup. I use the 2015 version. Where can I find it?
Thanks to everyone here, great spirit in this forum!
The information on where to find it is identified in the video and it was also indicated by @catamountain in her last post as well.
You need to get it from the Sketchucation site and you must be logged in to download extensions. Here is a direct link: http://sketchucation.com/pluginstore?pln=RoundCorner
Yes, I did that already, but my next question is, how to install the downloaded plugins in Sketchup?
Inside its TOOLS-PREFERENCES there is the section EXTENSIONS. That section has a button called INSTALL EXTENSION. But when I click it, the downloaded Fredo files with their extension .rb are not accepted, Sketchup only accepts so-called .rbz (“Ruby”) files.
Besides, to use your link, I would have to pay between 15 US$ to 100 US$ for downloading these two interconnected files (Fredo and RoundCorners). I downloaded them from the links of another post within this forum here.
What to do in this situation?
The link should have led to a free download, but you do need to register as I previously inforned you. Although there are other methods, I think the best way for you to get the files into your system is to:
- Zip each of the .rb files and save them to an easily accessed location.
- Change the .zip (or zipx) extension to .rbz (Note that .rbz files are zipped .rb files).
- Use the standard method for installing plugins now: Window > Preferences > Extensions > Install Extensions
RoundCorner downloads as a RBZ file.
You can join SketchUcation for free to download plugins. The paid memberships include extra services.
Though you still should learn how to make a rounded edged cube with the native tools.
- draw a rectangle with the Rectangle tool.
- Use the Arc tool to round the corners.
- Erase the extra geometry left at the corners.
- Draw a side profile face of your sofa cushion. Select the edges of that rounded rectangle drawn above. Switch to the Follow Me tool and click on the side profile face.
Ahhh, that’s it - zipping them! Thanks!
What compression level do I need to apply: Store, Fastest, Fast, Normal, Good or Best?
I will go ahead with Normal, then trying out Best.
I didn’t see any free registration method, will check again later. But I had the files downloaded already from another location given inside another thread here, so I am fine. Will keep you informed, updates will follow.
Big thanks! 
During installation, despite the error message that a sub folder did not exist, Sketchup finished the installation of both plugins as success. But I didn’t see that plugin afterwards.
So I created those two folders and specified in the previous error message, and restarted Sketchup. But during start, I get this error message:
Error Loading File Fredo6_RoundCorner.rb
Error: #<NameError: uninitialized constant LibFredo6::Traductor>
C:/Users/Sven Littkowski/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_!LibFredo6.rb:326:in top_load' C:/Users/XYZ/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_RoundCorner.rb:28:in module:Fredo6’
C:/Users/XYZ/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/Fredo6_RoundCorner.rb:25:in `<top (required)>’
LibFredo6.rb is also required.
Though you should just download and install the latest plugin versions. Fredo6 is still actively updating his work.