Making a watch case (part 16), adding some curves

Making a watch case (part 16), adding some curves

I'm going to curve the back section to get rid of the right angled edge. I've written this g-code routine already for the top watch section so I'll use it again. Strictly speaking the back section is not supposed to be an ellipse shape, but if I tweak the parameters then it becomes a very shallow ellipse and will be fine for this initial design.

As before the g-code routine is depicted in the diagram, above, showing the tool paths. The programme itself is the same as before, only with different parameter values.

I run the routine and, as before, stand alert and ready to intervene in-case the routine goes astray

Cutting the shape into the back ring.

After running the routine, and polishing, the ring looks like this

The back ring after being having a curve cut and then polished.

Then I cut the back section to fit inside the middle section

Cutting the back section to fit inside the middle section.

As before, I cut a gasket groove into the edge to give a water resistant seal

Cut a gasket groove for a water resistant seal.

The next thing I did was to add some curvature to the lugs. I put the middle watch section into the vice,

Putting the middle watch section into the vice to work on the lug's curvature,

and filing some curvature into the lugs

filing some curvature into the lugs.

I'm trying to be consistent with both set of lugs, I think this is something that will improve with practice. It's really a case of doing it by eye and making them look right. After my initial work on the lugs they look like this:

The middle section after the lugs have been curved,

which fine for now. Once they're polished I'll take a fine look at them an make sure they are all consistent and perhaps do some more adjustments.

 

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