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In an AutoCAD drawing, there are some stubborn layers that won’t purge no matter what you try, even on seemingly empty layers with no object on them if you try PURGE you won’t be able to delete them. To get rid of these stubborn layers and to clean your drawing from unused layers you can use LAYDEL and LAYMRG commands. Using these commands you can even delete, but I won’t recommend that.

LAYDEL Command This command deletes all objects of a layer and purges the layer no matter what you have on that layer. Even the most stubborn layers are also deleted with this command. To use this command type LAYDEL on the command line and press enter, your command line will show this message. Select an object on the layer which you want to delete from drawing area and press Enter then select Yes from command line options and press enter again. All objects of the selected layer will be deleted and the layer will also be purged. If the layer has no objects then you can select Name option from the command line as shown in the image above and select the layer which you want to delete from the list of layers. If you delete a layer which contains an object from a block then it will delete that object from block too and the block will be redefined accordingly.

In the example below, I have a block shown in image A below with a rectangle on red layer. If we delete the red layer from the drawing the rectangle from the block will also be deleted and the block will be redefined as shown in the image B below. As you can see from the example above, it is likely to accidentally delete objects from drawings using this command so always use it with caution. LAYMRG Command You can use this command if you want to delete a layer and also preserve objects on it. This command will merge source layer with the target layer such that source layer is purged and objects on source layer are assigned to target layer. All the objects on source layer will acquire layer properties of target layer after using LAYMRG.

In the example below, we have three geometries on three different layers. let’s assume that we want to merge layer red with layer green so that all objects of the red layer will get shifted to the green layer. Type LAYMRG on the command line and press enter, click on the red object from the drawing and press enter then click on the green object from the drawing area and press enter again. Select Yes from the options of the command line to accept the changes and exit the command. You will notice that the red layer will be deleted from the drawing and all objects of the red layer will be transferred to the green layer as shown in the image below.

In this case too if an object is part of a block then the block will be redefined to take new properties of the assigned layer. Here also try to exercise caution while using this command to avoid accidental loss of data from your drawing.

Do you have questions related to this tip? Let us know in the comments below. I am a mechanical engineer and I have worked with Design, Manufacturing and Training industries but now SourceCAD is my full-time work and I use it to train students all over the world. I also train corporate clients and help them develop the skill set of their workforce. I am Autodesk AutoCAD Certified Professional and an Autodesk expert elite member.

I am a regular contributor of AUGI World magazine and apart from SourceCAD I also develop AutoCAD video courses for Pluralsight and other E-Learning businesses. Great tips for layer management, Laydel especially, but as many have said, use it wisely. The Lay del command only appears to be in AutoCAD for Windows not AutoCAD for Mac, it is an unknown command, however, similar functionality is available in AutoCAD for Mac by selecting a layer in the layer palette/visor and then do a right click of the mouse. From the popup menu DELETE is available and with this selected 3 options appear, 1. Delete the layer and its contents.

Delete the layer and move its contents to another layer – With this option, a dialog box opens presenting a list of the layers and you can choose 3. Don’t delete the layer and its content. Handy merging choice on option 2.

Hope this help the MAC user. Another method for this is to use the ERASE command. Start the ERASE command, type “ALL” and then deselect everything in the drawing that you wish to keep. “ENTER” and then review the command line to see how many objects were deleted.

Annulerplimaille (commande Autocad For Mac 2017

Then begin the purge command. This will eliminate any risk of deleting layers that contain needed blocks. Of course, “OOPS” and undo are always there if you see an issue. Unless your CAD group requires specific layers, this is what I found to be the most efficient way and quickest way for us to get rid of everything except what’s physically visible on the drawing. And greatly reduces file size.

(Customer drawings tend to have years worth of invisible information) We typically don’t have any hidden layers or information to retain, so this method is a little case specific.