Hi guys, thought I would share this little bit of information concerning copper flat bar source. If you check with people who do electrical work and change out large house panel boxes, or go to a scrap yard you can remove the copper busbar from the old electrical panels, Bussbars are solid copper bars approximately 1/4" thick x 1 to 1 1/2" wide and up to 2 ft long. Great for heat sheilds etc. Hopefully this can help fellow bolters.