Weld Patch Panel

[65GMCFirstride]

I have been learning how to weld as part of the rebuild of our 65 GMC. Starting to figure some things out, but I have a long way to go.

I have welded in a few patch panels on the body and have always tack welded in different areas of the panel until I have fully welded the entire patch panel.

Unfortunately, the PO cut holes in the back interior panel to install some speakers. I am going to weld in a new patch panel. For an interior job, do you really have to tack weld the entire panel?

I figured if I tack every 1" it would hold the panel secure. Then I could skim coat the area and block sand it.

I appreciate your opinion.