There is little sense in preparing a tutorial on creating custom AutoCAD linetypes, because there are dozens of those already available. One of those can be found here in part 1 and part 2.
In the meantime, the easiest way to get a custom linetype you need is to find one that someone else has already made. Do you have an existing DWG file with a linetype in it that you need. Use DesignCenter to copy the linetype into your own file, or copy and paste an entity with that linetype applied. You’re done!
If you want to extract a linetype from a DWG file and store the definition in a .LIN file, visit Tee Square Graphics and download TO-LIN.lsp or NEW-LIN.lsp. These lisp routines will extract one or more linetype definitions from an existing DWG file into a .LIN file for future use.
Here is a list of some other free linetypes available online.
- From xanadu.cz LP_Linetypes.zip linetypes.zip
- From wbdg.org/ ncs.lin
- From www.it.fnt.hu.nl/ NEN2322.lin
- A proper search can yield many .LIN files out there.
If you do find yourself creating your own linetype, remember even something like this is possible.
Custom AutoCAD linetype
