AutoCAD 2010/2011/2012 DWG Format

[#1]

Hi everybody!

One easy way for I calculate the weight of plates with many holes is creating regions and subtract the cuts as i need and after apply "LIST" command for get value of area . But, i cannot subtract the regions, in command line says :

"Command: region

Select objects: Specify opposite corner: 44 found

Select objects:
44 loops extracted.

44 Regions created.

Command: subtract Select solids, surfaces, and regions to subtract from ..

Select objects: 1 found

Select objects: Select solids, surfaces, and regions to subtract ..
Select objects: Specify opposite corner: 4 found

Select objects:
At least two solids, surfaces, or coplanar regions must be selected."

Why? what i do?

I appreciate any answer!

[#2]

Attach the file here that exhibits this behavior.

[#3]

You need to put them all at elevation 0.

[#4]

Nothing wrong with it.

[#5]

Did you find any entities with elevation other than zero? I must have missed them.

[#6]

Yes, out of zero elevation. I not understand what happening. I check in the properties of the circles and show me that's ok ZERO, but is lie. The properties not show me the true value of the zero, the accuracy goes beyond that the display of the properties can show me.

[#7 · Accepted solution]

Not really sure, but I ran "All to Zero" macro and it worked.

Just add this to a button

^C^C_UCS;;_move _all;;0,0,1e99;;_move _all;;0,0,-1e99;;_chprop;_all;;_thickness;0;;^M;

[#8]

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brunobiazotti wrote:

 I check in the properties of the circles and show me that's ok ZERO, ...

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Did you check out to 8 decimal places?