I think I understand a bit what is gong on. I gather that LayOut is a separate program that works well with SketchUp. When I saw the term LayOut in the documentation, I assumed it was a module within SketchUp. The documentation gave no hints otherwise.

I just searched for "round Rectangle" in the help search box and was sent to the page below. There was no indication this page applied to a completely different program, and NOT SketchUp. After all, it still says SketchUp at the top left of the page.

The documentation could be MUCH clearer that the functions are not actually part of SketchUp, but rather a completely different program that I may or may not have.

I think your documentation assumes users are psychic. Let me assure you that VERY few are!

Seriously, it is in the help file! Is the help file wrong?

I'm using the web version and can not find the round rectangle tool.

Help suggests using UpArrow or DownArrow while using the rectangle tool: Does NOT work!

Help suggests menu: Tools->Rectangles: I can't find this menu!

The images show the only menus I can find.

Thank you for the little demo. It showed techniques that would have taken me a while to figure out.

It seems that many of you think I may have never used a drawing program. I've used plenty. There are differences between them, usually minor. I don't read the manual when I start using another, I just jump in and check the help file if I have an issue. Contacting a help forum is very rare, for me.

I did use sketchup a bit, a decade ago. It wasn't quite suitable for my needs at the time, so I never became particularly proficient.

Sketchup has one "feature" that is vastly different from any other drawing programs I've used. I'm sorry, but I can't help thinking of it as a bug. When two separate objects touch or get close, (I don't know the exact criteria) through some black magic, these two objects become some kind of half merged object. They are not truly a single object, as you can select part of the object with a window selection. And yet, they are not truly separate objects, as moving the window selected part of the object drags the common points and distorts the edges of the non-selected part. This happens to drive me completely bonkers! I can't think of any possible utility for it!

I will eventually need to merge the objects, when I have the separate pieces aligned where I need them. I don't want the software to partly merge the objects while they are in the wrong position, because then I can't move therm to the correct position without distorting edges to to some nonsensical position.

When I tried to make my shape, I made the 45 degree semicircle first. I then made the thin rectangle, and tried to move the rectangle to the semicircle. I hoped it would merge, but it didn't. I assume snap to grid prevented it from getting close enough. Next I made a small square with the upper left corner at final square correct position. I then dragged the bottom edge of the square to it final position. The final step, to drag the right edge of the square to it's final position caused great havoc. The crossing points of square and rectangle and semi circle dragged the edges into bazaar shapes.

In most drawing programs, order you make individual pieces and bring them together matters little. In ketchup, the order matters a great deal. Some orders make the process a cake walk, other orders make it nearly impossible to get the desired result. Now that I know what intermediate shapes to avoid, I can come up with ways to make what I need.

One question: Is it actually possible to disable the stickiness function?

Once again, thanks for your assistance.

How would you make this object? It consists of a square, a rectangle and a half circle. The half circle diameter and rectangle length are the same as the square diagonal. I've tried several ways. I always end up with gaps, as in the Zoom View. I can't get rid of the gaps. I set the precision to the max, that did not work either.

I want to merge the three objects into a single object, not a group.

Thanks

That does not work, either.
I did notice that some of the points of the different original objects were not actually connected, just very close. (Had to zoom way in to see this) I fixed those, but that did not help.

I can select the object, which gives a blue outline. When I click the pull tool, the object becomes un-selected. When I move the pull tool over faces of other objects, the face becomes selected with blue dots on the face. But for my object, it's face is never selected. No blue dots. I'm guessing this is because, it is not a closed object. When I zoom in as far as I can, all of the edges appear to be connected.

Is there some sort of heal command that will make the very close but not quite connected points actually the same?

I drew TopViewNotSolid in 2D perspective, as it was less confusing.
I changed to 3D perspective and pulled the top faces to 3D, at least it looks like I did.
I tried to combine these into one object, I got "Not a Solid" error.
The bottom view shows that it is not a solid.

How do I make it a solid?

I have to say, it would be nice if the help system could translate un-group to explode, for me!

So, I made the totally independent object, the half circle a group with one object in it. This did prevent it from having its points from being auto-healed. I have to say, this seems inside out. Why not just let me group things when I'm ready to do that?

What exactly is the group shortcut? I search the help and it would not say. It gave a list of default shortcuts, (a VERY short list) and group was not amount them.

Finally, what is the un-group command? Searching help produces nothing useful.

So, what is the vaccine for this "Auto Healing" BUG?

(Which , by the way, sounds a lot like this Dr. Who episode: https://tardis.fandom.com/wiki/Nanogene#:~:text=Nanogenes%2C%20also%20known%20as%20nanobots,or%20guarding%20planets%20and%20technology.)