I Restored And Repaired This Antique Ship Compass

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I restored this old ship compass. The compass was not working because there was no fluid in it and it was very dirty and patinated. Also the paint was in bad condition and some of the screws needed to be replaced.

Only issue I encountered during the disassembly was the empty bottom piece being stuck so I had to use a hammer and a screw driver to release it. I think the bottom is there to act as a weight. to keep the compass level.

I often clean up brass with ketchup. This time I wanted to try electrolysis. I had never tried it on brass but there was no risk of permanent damage. Good thing about electrolysis is that I can leave it just running and come back later and it will remove both oxidation and paint. However something unexpected happened. The wire I used was zinc plated and I didn't realize the zinc could dissolve and move on the brass. I'm unsure what caused the reaction but I think it could be electroless plating, a method of metal plating which doesn't require electricity. Luckily I forgot to clean one of the pieces so I could still demonstrate a successful cleaning process. When you are using electrolysis for cleaning it doesn't matter too much what current and voltage you use. More means faster reaction (but obviously don't use mains electricity) But if you hook the cables the wrong way around your parts will be destroyed.

Zinc plating was not an issue because the steel wires were only zinc plated. Such tiny amount of zinc spread on the whole surface area of the parts is not thick enough to last a polishing. I used my restored buffing wheel to polish the parts and then I used car polishing compound in tight spots to polish the metal and remove the layer of zinc.

The dial of the compass would have been a pain to disassemble as there were nails piercing the dial sheet and they were soldered on the body. Only issue with the dial was the paint. I tried to use acetone and paint thinner but the paint was not dissolving easily so I sanded it off. In hindsight, I probably could have used electrolysis for this as well because it will anyways sit in a liquid in the compass so it's unlikely that the dial would be somehow damaged in the process. I then painted the dial and the inside of the compass with an "antique white" color. It has a slightly greenish tint even though because of the hard contrast it might look snow white.

The screws on the top were damaged so I made new ones from some larger brass screws. The top of the screws were too wide but with a simple customization I was able to make new ones. All the other screws were cleaned and polished so they could be reused.

During the disassembly I filled the compass with alcohol solution so it won't freeze. In reality it took me quite some time to get rid of all the tiny bubbles but I've worked with filling medical IV syringes manually so I have a few tricks up my sleeve. Someone might say there has to be a bubble to see the compass is level, but the glass is completely flat and on a ship it will never stay so level the bubble would be in the middle of the flat glass.

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Tools used in this video :
BLACK GLOVES: https://amzn.to/2YY8a09
ELECTRONICS SCREW DRIVER SET: https://amzn.to/2F3n6k
ROTARY TOOL: https://amzn.to/2WF75I6
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Видео I Restored And Repaired This Antique Ship Compass канала Odd Tinkering