Miter cuts in Sheetmetal

[SS65SuperNova]

I am trying to do exactly what is shown here in this YouTube video. But I cannot seem to select all edges it only lets me select one. How do I get this to work? The video is @

http://www.youtube.com/watch?v=qAtWfpqdcQU

Thanks

 

[dbreda]

Hi SuperNova,
Hold down the Shift key while selecting your other edges to enable chain selection.

Don