
After scroll sawing the copper 'iris' motifs, the last steps were to sand them to remove the burrs, torch them to drastically change the patina, and then epoxy them to the outside of the glass. Sooooo, I finished them last night.
Nothing remarkable about sanding the motifs......220 grit on a sanding block, part on a flat surface, and sanding both sides to remove the burrs from the scroll saw op and that was it. charlese almost had me convinced me to do a little hand filing but I resisted the urge and left them as is. Sorry Chuck!!!! It was harder for me to ignore picking up that file than you can imagine. I was so anxious to call this a done project that I stood back a couple feet, looked at them, and said….”good nuff!!”.
The propane torching was real interesting. The torch was set very low as the instructions called out and you then heat the copper to get the color shift. It only takes about 5-8 seconds of passing the torch back and forth about 3 inches over the copper before the color shift starts to happen then it VERY QUICKLY goes to orange and then pink highlights start to appear. After that, any additional heat takes the color away completely leaving a silver appearance and once gone, YOU CAN NOT GET THE COLOR BACK. Even though I practiced on a single scrap piece of copper, should have tried several scrap pieces to really get the hang of it. Here’s what the motifs looks like in its original sanded state and after introducing the heat.
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Where you see lack of color is an indication that the heat was applied a second too long. That’s right….a second.
Here are all 6 motifs, best side facing up, followed by the back side. Good thing you get 2 chances to get them right. The back sides show the problem with the excess heat taking the color away.
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Good Side
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Bad Side
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Gluing the motif to the glass worked best with the glass laying flat. Tried doing it first with the glass vertical inside the lantern but they crept downward so I remove the glass and laid it flat. The motifs get placed in opposite corner as shown.
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And finally, the finished product!! Officially a woodworker now!!
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