Making a watch case (part10.5), putting a curve on the inside watch glass shelf

Making a watch case (part10.5), putting a curve on the inside watch glass shelf

Going back over the photo's I remembered that I'd forgotten to include this bit, apologies about the 'part 10.5' but it fits between the part 10 and 11.

I'd like the edge of the watch-glass shelf to have some curvature so that it doesn't just end abruptly with a square edge. I'm going to use the lathe and some cnc to cut the curve.

Once the lathe is set up I can cut the circular profile into the shelf, there's not much material to take off, it's really just about knocking off the corners and replacing with some lovely curves!

cutting the curve into the watch glass shelf.

Here's the view I've got of the controls software, using Linuxcnc, showing the tool paths. 

Tool paths for the inside watch-shelf curvature cut.

The red lines show the tool paths that have already been traversed whereas the white are the ones yet to follow. I may stop the routine earlier than the programme's end if the cut is finished.

Here's the finished result,

After the inside curvatyre is cut into the watch glass shelf,

it's quite hard to see from this photograph, but the edge has been taken off the inside rim of the watch-glass shelf.

What is apparent, again, from this photo is how the screw hole has gone through into the top of the watch-glass shelf.

Note to myself:
Pondering this a bit more recently, since I'm writing this report later than I actually did the work, the top watch section could be about a 1mm deeper and fit into the centre watch section ring about 1mm deeper too. That would leave enough space to tap the holes, although the centre watch section would need the middle shelf moving down 1mm too. Hmmm...,it's all good stuff...,eventually a good design will materialize!

 

Pingbacks are closed.

blog comments powered by Disqus