Some sub assemblies in drawing have hidden lines

[barry.mccullough]

Why are some sub assemblies within a larger assembly showing with hidden lines in a drawing (See attached image.)

You can see in the top level assembly that there are a number of parts/sub assemblies with hidden lines shown.

I pulled one sub assembly out to the left for clarity. Hidden lines shown.

I have also pulled the part from the sub assembly to the left. Displays fine.

I then added a separate view of the sub assembly itself and it shows fine.

So the issue seems to reside within the top level assembly.

Any ideas?

[mcgyvr · Accepted solution]

Its likely that those subassemblies are set to "Reference".

Look at the bill of materials for the assembly.

Is the bom structure for those subassemblies set to "Reference"?

If so change them back to "Normal" either there or by opening the subassembly and going to tools...document settings.. bill of materials tab. 

[tdswanson · Accepted solution]

Check the BOM status of those sub-assemblies in the top level.  If their status is "reference", that's generally how they'll show up.  In the view settings inside the drawing environment, there's a pull down for how to handle reference parts as well.  Hope this helps!

[andrewiv · Accepted solution]

Those are actually phantom lines, not hidden lines.  They usually indicate that a component is set to reference in your top level assembly.  By default the hidden edges of reference parts are calculated separately from normal parts so you will see the phantom lines unless you change the options in the drawing view.  If you don't want them to show and still need the sub-assembly to be reference then edit the drawing view and, on the Model State tab, select all bodies for the hidden line calculation.  You can also change the lines from "As Reference Parts" (phantom lines) to "As Parts" (Solid lines) or turn them off completely by selecting a different option under line style.

[barry.mccullough]

@mcgyvr @tdswanson , @andrewiv 

Thanks so much for the super quick responses, much appreciated.

I can tell you that this has fixed my problem. Lots of the parts/sub assemblies are set at reference for some reason.

Barry