autocad file types

[Anonymous]

Just wondering if anyone knows, what would be the best file type to send a drawing to a customer that can be viewed but not edited? This ofcourse would be for security and copyright purposes.

thanks for any help.

[DarrenP]

.dwf, .pdf?

[Anonymous]

Thanks. I think dwf is what we're going to go with. We send pdf's for approval puposes when we can, but some customers want AutoCAD type files. We've had our dwg's "hijacked" in the past so i think we're going to change our company policy to not send anyone dwg's anymore.