how to flatten a 3d drawing in autocad lt
This is a classic issue with AutoCAD drawing: Sometimes you lot accidentally draw with acme in your second drawing. The probable crusade is considering you snap to an existing object with tiptop. Merely we never know, why the objects have Z value in the get-go identify anyhow.
If yous rotate the cartoon and see it from an top view, y'all volition see the objects has elevations. This is a 2nd drawing, and so it's not supposed to look like this.
In that location is a proffer to use FLATTEN command to fix information technology. But it never works well for this consequence.
Earlier you continue, create a backup of your drawing!
Using AutoLISP plan
My recommended tool for this problem is by using ALLFLAT past Lee Mac. Y'all tin observe the lawmaking in CADtutor forum here. If you are not familiar with using AutoLISP program,
If you are not familiar with using AutoLISP program, read how y'all tin can save the lawmaking and use it here. Lee Mac has many useful LISP programme. This program is very simple and works very quickly.
Nonetheless, because this program is very simple and not developed further, in that location are some minor bug with rotated blocks and hatches. If you want to try another solution, try SUPERFLATTEN by Joe Burke. The problem with SUPERFLATTEN is it doesn't work with dimensions and OLE object.
Dimensions are a chip tricky because they don't have elevation. If you use Associative Dimension, then you volition be okay. The dimension will follow the objects. The problem is when the dimension is not associated with any object.
You may desire to try them both and see which ane works well for you.
Manually Prepare the Cartoon
If you utilise AutoCAD LT or AutoLISP doesn't work for your drawing, you lot can try to fix it manually. It's not difficult simply takes some time.
Select all objects. Or you can select only objects that have elevations from elevation view. For a very circuitous drawing, you may want to practice this gradually. Selecting all objects at in one case can make your reckoner slow or crash.
Nosotros need to modify the Z value for our objects to 0 (cypher). Open up Properties Palette.
Considering we select multiple types of objects, nosotros volition not see the Z or top backdrop here.
Click the object drib-downwards list. Select an object type, except for dimensions and hatches. Nosotros tin can ignore them because they don't have pinnacle.
The summit field is named differently. For example, blocks elevation is defined by Position Z. Alter the Position Z value to 0.
Repeat the procedure for other object types.
Hither are several fields that command the elevation.
- Lines tiptop are defined by Beginning Z and Finish Z
- Polylines meridian are divers by Elevation
- Arc, Circle, and Ellipse elevation are defined by Center Z
- etc.
The real claiming is when you lot accept blocks with the objects within information technology have different Z value. You will need to open up each block in block editor and change the Z value using the procedure in a higher place.
I know this tin can be a tedious task. But if you lot demand to proceed working on this drawing, I suggest yous fix it. The problem won't just get away; it would be harder to piece of work with it when it gets more complicated!
Preventing this Issue
If you only with second drawing, it is a skilful thought to gear up Object Snap to ignore Z value. Information technology will not fix existing drawing, but at least you lot volition non having a bigger trouble.
You can fix it in AutoCAD options, Drafting Tab. CheckReplace Z value with current elevation.
If you adopt to modify Organisation Variable from the control line, information technology is saved in OSNAPZ variable.
It'due south a good idea to add this variable in Organization Variable Monitor, so when the variable inverse y'all will know information technology immediately. Yeah, sometimes the variables are changed in a mysterious way.
If you are audacious, y'all tin can add the default Organisation Variable in acad.lsp or acaddoc.lsp. It volition make certain the variable is set when yous commencement AutoCAD.
Source: https://www.cad-notes.com/fix-autocad-drawing-thats-accidentally-has-z-value/
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