maybe add the file using the
top right of the reply pane- then
"Attach" at the bottom right- and then
browse to the file you wish to upload
you'd be surprised how much help
you'll get - kelef
The fun world of importing DXF. You will need to delete the unwanted lines. There isn't a clean-cut way of importing DXF. Sometimes it works OK, sometimes not. It depends on which program it's created in and the settings when exported. Sometimes you can spend more time figuring which settings work than creating the models from scratch.
I agree with Chris Saller, sometimes Solidworks will recognize the layers and you can turn off or not.
It also depends on your customers mapping scheme when exporting the DXF if there is an option to blanket map all layers or not.
Typically our DXF's come in 1 or 2 layers at best which makes it frustrating when the designer on the other end used broken out sections or in the case of autocad, part of the assembly or part is HLV but the rest is not then good luck figuring out geometry.
check Repairing Sketches After .DWG or .DXF Import in the help file.
If you are importing the DXF as a sketch into a model there are options before you import it directly.
If the sketch has layers you can turn off the offending ones prior to insertion.
Also on the last dialog screen there are options to define the origin and also a delete elements option where you can pre-screen the elements you want to delete prior to ever inserting a DXF. (*HINT*: this works great for decimating title blocks which usually are graphics killers when importing).
Hope that helps.