Category archives: Soldering and welding

A category collecting together any descriptions of soldering or welding metal together.

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Making a watch case (part13), preparing the back section

Making a watch case (part13), preparing the back section

I make a recess in the middle watch section to take the back piece. I'm cutting down 2.0mm into the back of the middle section to leave a 1.7mm thick shelf inside the middle section. This gives strength and acts as a border between the top and bottom watch sections but I think it could be slimmer in future.

The middle section wall thickness is 0.5mm, so it's important to make sure the middle watch section is properly centered on the lathe before making this cut.

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Making a watch case (part 8), making the top ring section

Making a watch case (part 8), making the top ring section

The top ring section is made in pretty much the same way as the centre section. I get a bar of brass and bend it into a ring and solder the joints. This technique is worth developing here because it can be extended to precious metals even though, with brass, the relatively inexpensive cost of the metal means the ring section could be machined from a solid piece of metal.

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Making a watch case (part 6), soldering the lugs

Making a watch case (part 6), soldering the lugs

To solder the lugs onto the centre watch section I'm using hard solder and borax flux. The helping hands make things a lot easier as the watch ring needs to stay in the same position. The lugs fit well enough in the ring not to fall over.

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