Click the pictures for a larger version.
I made around 7 of these grilles before I finally was happy with the last one. These pics are mostly from grille numbers 5 and 6 with a few of number 7 thrown in. The process was the same on all of them. With each grille, I was able to work the copper over the form to tighter tolerances each time.
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The grille is starting to take shape. While it looks like it is almost done, this is maybe the halfway point.
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Taking a look at the back side and we can see it needs some work yet to get it to the form. There is also some copper that now can be trimmed.
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Here I have the excess trimmed off.
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I start to planish the copper over the form with a flat faced hammer.
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I use this hammer end to form the corners better.
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Eventually I got to this. Fits nice and tight.
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At this stage, the hammer work is mostly done. I still need to cut the center out and add some pieces inside.
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There is an inner lip around the edge of the cutout. During my various practices, I found it was easier to solder the framework in from the inside and then cut out the center. I also used a rectangular piece of aluminum to keep the frame nice and square while I soldered it. Once it was soldered, the aluminum popped right out.
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The grille with the center cut out.
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Bent up some brass for the center bar sections.
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