Ignoramus19822 wrote:

My question here is what is the best way to do it given what I have.

Here's the real low-tech tool for the job:
http://www.hazet.de/eng/katalog/suche_3.asp?F=1960&H=100&U=700. You
only need a hammer. Slices sheet-metal like butter. I have mine since 30
years.


Nick
--
DIY-DRO // Eigenbau-Digitalanzeige
Available now in USA / Canada
http://www.yadro.de