Hello,
normally when you draw the dimension line, you have a color change when you are perfectly aligned. If you change afterwards the wall length, you need to delete and create again the dimension line if you want to use this again.

Hello, I don't think it is possible to lower down the ground, but you can adjust the elevation of levels through the levels panel (double click on one level at the top of your window) to get it.

<r>Hello, I did what Mike described.(I think...)<br/>
<br/>
<IMG src="https://www.mediafire.com/convkey/fdbc/w8r05panzo733m06g.jpg"><s>[img]</s><URL url="https://www.mediafire.com/convkey/fdbc/w8r05panzo733m06g.jpg"><LINK_TEXT text="https://www.mediafire.com/convkey/fdbc/ ... 33m06g.jpg">https://www ...

<r>Hello Kwerense,<br/>
I understand that you want to reproduce this cabinet in SH3D.<br/>
You have in the furniture library a special item named 'box', it is a cube but you can give it the dimensions you want. By using several boxes you can make base, top, the 2 sides and rear, the doors and the ...

Thank you, Mike, for the advises. I appreciate. [:)]

One idea !
It seems that you create walls twice, once for the basement level, then for the main level?
Did you try to copy/paste walls from basement level to main level ?

Hope it helps.

<r>Hello, I tried to reproduce your problem..without success !<br/>
<IMG src="https://www.mediafire.com/convkey/2205/u6gpqboi282l4no6g.jpg"><s>[img]</s><URL url="https://www.mediafire.com/convkey/2205/u6gpqboi282l4no6g.jpg"><LINK_TEXT text="https://www.mediafire.com/convkey/2205/ ... l4no6g.jpg ...

<r><IMG src="https://www.mediafire.com/convkey/5b9d/leg6vcmw3f0x9xi6g.jpg"><s>[img]</s><URL url="https://www.mediafire.com/convkey/5b9d/leg6vcmw3f0x9xi6g.jpg"><LINK_TEXT text="https://www.mediafire.com/convkey/5b9d/ ... x9xi6g.jpg">https://www.mediafire.com/convkey/5b9d/leg6vcmw3f0x9xi6g.jpg</LINK ...

Hello,
you have already some windows with sill in the furniture library.(http://www.sweethome3d.com/freeModels.jsp)
You can also find some sills in 3DWharehouse and import them in SH3D.

Hello,
very interesting idea!
Did tou try creating stacked rooms with 1' floor thickness and 0.01 walls ?