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Flatten 3D 'can not' nor with Z values

Printed From: CAD Forum
Category: EN
Forum Name: AutoCAD
Forum Description: Discussion about AutoCAD and AutoCAD LT, viewers, DWG and DXF formats, Design Review, AutoCAD web, Drive, add-ons
URL: https://www.cadforum.cz/forum_en/forum_posts.asp?TID=13728
Printed Date: 06.Sep.2026 at 03:47


Topic: Flatten 3D 'can not' nor with Z values
Posted By: 2JimB
Subject: Flatten 3D 'can not' nor with Z values
Date Posted: 12.Jul.2022 at 19:08
Ive a 3D drawing that includes over 21000 lines.
I want to flatten it.
Its a dwelling.
Previously I've exploded everything generally 2 or 3 times so every thing 'is exploded'.
Then I flatten and it generally works.
However have done the above and all stays the same, but everything is exploded!
Ive also tried going to properties to change the Z to 0 ... but this option is not available.
Does anyone have a solution to override everything and remove the Z so I can flatten this thing?


-------------
JimB


Replies:
Posted By: philippe JOSEPH
Date Posted: 13.Jul.2022 at 10:43
Hello 2JimB, if you want to flatten a 3D solid you have various options :
-1- Do a FLATSHOT with or witout the hidden lines and you will keep intact you 3D solid.
      Eventually do a BLOCK of your 3D solid and copy + rotate it in all the positions that you
      want so that you have all the 2D views when FLATSHOTening it.
      When setting the properties of the flatshot you will select a color and line type for your
       hidden lines for example green and hiddenx2.
      After the FLATSHOT you will erase the intities in double with an OVERKILL with the good
      settings and on each layer separately.      
-2- Do a copy of your solid, explode the copy and try to flatten all the entities.
      When selecting entities and the openning the properties pannel ( Ctrl+1 ) you will only be
      abble to act on entities of the same kind that's to say : only lines or only arcs + circles,
      etc...
Please tell us if this helped or not.

Posted By: philippe JOSEPH
Date Posted: 13.Jul.2022 at 10:46
Found this on the internet with : autocad move everything to z 0

Use the FLATTEN command to change the Z values of all lines, arcs, and
polylines to 0.
1. Turn off or freeze any hatch layers with hatch patterns so they are not included in
the selection.
2. Type FLATTEN at the command line.
3. Select all objects and press the Enter key.
4. Type N for No when prompted to remove hidden lines.

I do prefer a lot the FLATSHOT command.

Posted By: philippe JOSEPH
Date Posted: 13.Jul.2022 at 21:51
Eventually see my AutoCAD file : ORTHO-TO-ISO_01_B.dwg in the CAD/BIM Block library about the FLATSHOT command.


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