#21
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I don't think we have any swimming pool dealers in town anymore. I've heard a mixure of muratic acid and water is a good pickle bath and also vinegar. I think I read that on the Internet, so it must be true. LOL.
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Mike |
#22
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Jeff Dyce Hell, there are no rules here - we're trying to accomplish something. Thomas A. Edison |
#23
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#24
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The swimming pool PH up is and alkaline. It's listed as 97% sodium bicarbonate - baking soda.
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Jim Russell |
#25
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I'll have updates later today. Lot's of stuff to try.
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Mike |
#26
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But I gotta get a handle on shrinking and stretching first before I tackle that project. Speaking of stretching....is there anywhere on this shell that I should be stretching first? I've just been trying to shrink.
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Mike |
#27
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If you stretch the face of the shell the sides will come around.
This will form tucks, and put tension on the sides. When you shrink the sides you are releiving that tension.
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Jeff Dyce Hell, there are no rules here - we're trying to accomplish something. Thomas A. Edison |
#28
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After swearing, getting mad, pouting, screaming, yelling, throwing stuff, and finally breaking down into a crying heap, I think I am catching on. By this set of pictures, I had beat more pieces of copper into oblivion than I even care to imagine. Actually I can imagine it...they are all laying on my workbench....like a trophy room of failed attempts. And maybe looking at it as failed attempts is wrong. Maybe I should count them on what doesn't work.
On to the pictures! This is where I started. The copper is just big enough to do one corner. I got it pretty well clamped down. I eventuallyy moved the clamp on the left side over closer to the corner. The copper was annealed and cleaned in a pickle bath. Attempt3_1.jpg The hammer I used for most of this. Attempt3_2.jpg After about 20-25 *LIGHT* taps. Attempt3_3.jpg Eventually got to this. I thought I was losing control of the situation at this point. Attempt3_5.jpg Another view with the copper off the wood form. Attempt3_6.jpg I trimmed most of the excess off here and switched over to this hammer. Attempt3_7.jpg I also used a couple of dollies as I worked the copper. This is one of them. Attempt3_8.jpg After about 20 minutes of work. Attempt3_9.jpg Even after working the copper over for 20 minutes, it still fits the pattern good. Attempt3_10.jpg OK...my question now is, how do I finish the metal off better? Are there any good techniques to get rid of the rest of the dents? I think I got one crimp in the corner, but that is better than the 3-4 I was getting. I am really happy how this one turned out. I tried burnishing the copper over my pattern by rubbing the flat side of that second hammer over the copper. That does not seem to do much. I was also contemplating laying a coating of soft solder on it and filing/sanding it smooth. Sort of like using lead filling on real cars. All advice is appreciated.
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Mike Last edited by BrassBuilder; 01-01-2012 at 10:05 PM. |
#29
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Hi, Mike. You seam to have to much metal hanging over the corner. You need to cut it back, by about 1". Curve it round from one edge to an other. From your photos you are trying to shrink to much,in one go.the tucks you are forming ,are folding in on themselves.If you can see what I mean. In your photos. Just go as you are going, a little bit at a time, from the top. Down . As you hammer you are rising tucks, you have to lock these down. This should work.
I hope this works, I find it hard to write what I mean. It's easy to show you how to do it.That a little hard as I live in Australia. Is there anyone who lives near you , who could show how to do this. |
#30
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Mike,
from the picture it looked like you folded over in a couple of places that's a tight radius it would be hard not to, with that much material. other then that your getting there!
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Rick Scott The second mouse gets the cheese! |
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