I am currently working on a set of details within my existing plan set file. In this particular detail, I have a short section of line that needs to show as dashed. However, all the line styles (including one I created with smaller dashes as shown on the left side) are too large for the dashes to show up on the 1" = 1'-0" layout space. Attached is a shot of the plan file along with a zoomed shot of the layout where this detail resides (the horizontal line just for testing purposes and is the sma
You can also open the Drawing Sheet Setup dialog from the menus. File->Print->Drawing Sheet Setup. You will want to do this for the cad detail you are working in since you can have different drawing sheet setups for different cad details.
Also, just to reinforce what others have mentioned, you should always draw your details at 1:1 and then scale them when you send to layout. You should make sure the drawing sheet is setup using the paper size and scale that you plan to use