cannot flatten dwg file

cannot flatten dwg file

danezeq
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Message 1 of 15

cannot flatten dwg file

danezeq
Collaborator
Collaborator

Hey

i'm trying to fltten an dwg file

i'm using the FLATTEN command.

 

the copmuter works hard for abount an hour and then i get the same Z axis lines. nothing changed.

 

Why is it happening?

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Accepted solutions (2)
11,646 Views
14 Replies
Replies (14)
Message 2 of 15

Alfred.NESWADBA
Consultant
Consultant

Hi,

 

>> Why is it happening?

To give a valid answer we would need:

  • the dwg-file to see which objects you have in your drawing
  • to know which version of AutoCAD you are working with

 

- alfred -

------------------------------------------------------------------------------------
Alfred NESWADBA
ISH-Solutions GmbH / Ingenieur Studio HOLLAUS
www.ish-solutions.at ... blog.ish-solutions.at ... LinkedIn ... CDay 2026
------------------------------------------------------------------------------------

(not an Autodesk consultant)
Message 3 of 15

danezeq
Collaborator
Collaborator

Autocad 2018

File attached.

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Message 4 of 15

Alfred.NESWADBA
Consultant
Consultant
Accepted solution

Hi,

 

for Polylines:

use command _QSELECT to select all polylines using a thickness > 0.0 and then change the property "THICKNESS" to 0

 

for block "Parcel-rh":

edit the block using block editor, run the same procedure as above for polylines and 2D-polylines

 

The rest was simply done by selecting all objects, then for each object type category change the corresponding value, e.g.

  • for arcs and circles ==> change center Z to 0
  • for lines ==> change start-z and end-z to 0
  • for polylines ==> change the elevation to 0
  • for blocks ==> change insertion point z to 0
  • ...

Only attributes stay with that workflow at the previous position, ATTSYNC might help with that (losing the XY-position then, that's why I did not do that in your dwg-file)

 

- alfred -

------------------------------------------------------------------------------------
Alfred NESWADBA
ISH-Solutions GmbH / Ingenieur Studio HOLLAUS
www.ish-solutions.at ... blog.ish-solutions.at ... LinkedIn ... CDay 2026
------------------------------------------------------------------------------------

(not an Autodesk consultant)
Message 5 of 15

danezeq
Collaborator
Collaborator

Thank you! i'm going to try this right now

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Message 6 of 15

danezeq
Collaborator
Collaborator

i don't understand the trick. "thickness" is already set to 0 on properties.

here is what i did:

https://www.youtube.com/watch?v=lXLAimGQ0UE

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Message 7 of 15

Alfred.NESWADBA
Consultant
Consultant

Hi,

 

you selected all polylines with thickness = 0.0 and then verified the value in the property window ... please, select the polylines with thickness NOT EQUAL 0.0 and then look to the property window. 😉

 

- alfred -

------------------------------------------------------------------------------------
Alfred NESWADBA
ISH-Solutions GmbH / Ingenieur Studio HOLLAUS
www.ish-solutions.at ... blog.ish-solutions.at ... LinkedIn ... CDay 2026
------------------------------------------------------------------------------------

(not an Autodesk consultant)
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Message 8 of 15

danezeq
Collaborator
Collaborator

ok i did most of the things.

 

i dont find "insertion point" for blocks. does it has another name ?

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Message 9 of 15

Alfred.NESWADBA
Consultant
Consultant

Hi,

 

>> i dont find "insertion point" for blocks

Please find it marked in the screenshot:

 

20180322_093702.png

 

- alfred -

------------------------------------------------------------------------------------
Alfred NESWADBA
ISH-Solutions GmbH / Ingenieur Studio HOLLAUS
www.ish-solutions.at ... blog.ish-solutions.at ... LinkedIn ... CDay 2026
------------------------------------------------------------------------------------

(not an Autodesk consultant)
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Message 10 of 15

danezeq
Collaborator
Collaborator

Thanks, just found that 🙂

 

1.but a lot of blocks still has elevation. maybe its defined inside the blocks?

is there any way to flatten them all together?

 

2. how can i flatten "leaders"? when i pick them all, i dont see the "posion z" in the propeties bar...

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Message 11 of 15

Alfred.NESWADBA
Consultant
Consultant

Hi,

 

>> but a lot of blocks still has elevation. maybe its defined inside the blocks?

I guess you mean the attributes, that's why I wrote about command _ATTSYNC

 

- alfred -

------------------------------------------------------------------------------------
Alfred NESWADBA
ISH-Solutions GmbH / Ingenieur Studio HOLLAUS
www.ish-solutions.at ... blog.ish-solutions.at ... LinkedIn ... CDay 2026
------------------------------------------------------------------------------------

(not an Autodesk consultant)
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Message 12 of 15

danezeq
Collaborator
Collaborator

Thanks for all your help.

I kust learnd how to flatten in dwg file without the FLATTEN command.

Btw, why the FLATTEN command failed?

 

And another thing, whats the difference between thickness and elevation?

Untill today i tought elevation = Z axis value and thickness=lineweight. am i wrong?

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Message 13 of 15

Alfred.NESWADBA
Consultant
Consultant
Accepted solution

Hi,

 

>> Btw, why the FLATTEN command failed?

Needs to be answered by the developer.

From my side: the command was a tool (old one) to help for most situations, but can't help with all objects, especially these types of geometry introduced later than the tool itself was developed.

 

>> And another thing, whats the difference between thickness and elevation?

Have you looked to the help before asking? Just 2 links to these settings/properties:

>>>THICKNESS<<<

>>>ELEVATION<<<

If that is not well to understand then let us know that please.

 

>> Untill today i tought elevation = Z axis value and thickness=lineweight

First is correct, THICKNESS is the (3D)height of an object, not the lineweight.

 

- alfred -

------------------------------------------------------------------------------------
Alfred NESWADBA
ISH-Solutions GmbH / Ingenieur Studio HOLLAUS
www.ish-solutions.at ... blog.ish-solutions.at ... LinkedIn ... CDay 2026
------------------------------------------------------------------------------------

(not an Autodesk consultant)
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Message 14 of 15

danezeq
Collaborator
Collaborator

Thank you alfred. i learnd from you a lot.

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Message 15 of 15

Alfred.NESWADBA
Consultant
Consultant

You are very welcome, - alfred -

------------------------------------------------------------------------------------
Alfred NESWADBA
ISH-Solutions GmbH / Ingenieur Studio HOLLAUS
www.ish-solutions.at ... blog.ish-solutions.at ... LinkedIn ... CDay 2026
------------------------------------------------------------------------------------

(not an Autodesk consultant)
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