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By Miles Nicholson

Recently I was posed an interesting requirement. A client wanted the ability to change the linetype properties of selected blocks in a schematic to represent that this device or devices are external.

AutoCAD Electrical defaults to the SYMS layer for symbols and a linetype of CONTINUOUS.

However I came across a post on that fitted the exact requirement.


In notepad, copy the text below and save the file as LTCHANGE.LSP in one of your support directories e.g. C:\Program Files\Autodesk\AutoCAD 2014\Support.



Type APPLOAD at the AutoCAD command line and add the LSP to the Start-Up > Contents

To initialise the command type LTCHANGE

Type the name of the layer you want e.g. HIDDEN2 (must be a loaded layer in LINETYPES and within the current drawing)

Pick the blocks you wish to change.