- This was the most difficult project, but the best one. It was difficult because I needed to meet the constraints: less than ten pieces, look good, and I needed to be able to cut the shapes. So I printed out two feathers and then cut the outline of each part to used that as my guide to cutting the glass. After all the pieces were cut I lined copper tape on every piece, lining the perimeter then painted over the copper tape with flux and then solder. I continued this step for every piece and then lined the parts up and soldered everything together then smoothed out the perimeter of the entire piece. While soldering I was scared of burning myself because the tool and the piece were both very hot.