Begin cut with metal cutting sheer.
Cutting copper sheet with a torch.
For thicker copper sheet you would want to use a jewelry saw it s a bit slower but gives you a nicer finished cutting edge.
Measure the dimensions needed with tape measure.
Cutting your own copper shapes can be easier than you think.
Elevate and support one edge of sheet with free hand allowing entry point for cut enough clearance for metal cutting sheer to proceed.
Mark the required dimensions on the surface of the sheet using marking tool and straightedge.
While you can still cut the copper material with the plasma cutter you should not force it and cut too fast.
Once the copper sheet has been marked where it needs to be cut the sheers blades are positioned on each side of the sheet as would be regular scissors when cutting paper.
Work gloves must be worn during the cutting process as the cutting edge of the copper is very sharp.
They look like big scissors and work the same way.
The sheers handles are brought together to cut through the sheet.