Bronze, Titanium and Carbon Fibre. A 'Case' Study ;) (Photo heavy)
Evening All,
I've got to a scratch head, think about it stage with my Porsche Engine - Specifically how to get it back out of the garage when its fully assembled.
Because of this I have allowed myself a diversion.
Some of you will remember the Lumaholic watch http://forum.tz-uk.com/showthread.ph...m-a-Lumeaholic.
In that thread I said it was an idea for a case, and the plastic one was a prototype.
Well, I was happy with how it turned out, with a few minor alterations.
As a result I made the small changes and printed a pattern.
I then sent these off to a guy I know who does lost wax bronze castings for a living.
http://i306.photobucket.com/albums/n...psbabqd8eb.jpg
I've wanted to make a Carbon Fibre dial for a while, and so I dug out some thin CF sheet that I have.
http://i306.photobucket.com/albums/n...psamduld6t.jpg
Marked a circle and made with the Saw. Carbon Fibre is horrible to cut,and thin Carbon Fibre is really yuck. A lot of little itchy bits.
http://i306.photobucket.com/albums/n...pscwxg3gwi.jpg
Still, a blank for the dial, a blank for the case, and a piece of Ti for the back.
Looks like a start :)
A blank dial would be beautiful - I'll polish the carbon to really show it off, but I need to practice applied indices.
So I grabbed another piece of Ti, and some files.
Made a Trapizoid, and filed the pins into it:
http://i306.photobucket.com/albums/n...psids0kj8j.jpg
http://i306.photobucket.com/albums/n...ps0jgkwcra.jpg
A 12 marker:
http://i306.photobucket.com/albums/n...pseqolhy3w.jpg
http://i306.photobucket.com/albums/n...psfz4nee8s.jpg
The casting needs a little work.
I thought Id see how it would polish up on the case edges.
Quite nicely it turns out:
http://i306.photobucket.com/albums/n...psiqegb69b.jpg
http://i306.photobucket.com/albums/n...psqjb131gj.jpg
http://i306.photobucket.com/albums/n...pserynycrz.jpg
The back will be a snap on, made from Titanium.
first make the square round:
http://i306.photobucket.com/albums/n...psdvjwkdvo.jpg
Thats about the right size:
http://i306.photobucket.com/albums/n...psutolglvy.jpg
I have a soft jaw chuck, which is great for holding thin things. First you load the jaw, and then bore a shallow hole to hold the part.
http://i306.photobucket.com/albums/n...psaytrnio6.jpg
Then you can grip the part for turning
http://i306.photobucket.com/albums/n...pspxno4xhk.jpg
If you look carefully you can see the 'snap' angle on the back piece. there is a matching bevel inside the case
http://i306.photobucket.com/albums/n...psladuivvv.jpg
It needs the outside profiling, another soft jaw job
http://i306.photobucket.com/albums/n...psvajkfpni.jpg
Of course I need a crystal as well.
I started with some crystal plate:
http://i306.photobucket.com/albums/n...ps3d9v7ir8.jpg
And I bored the Case on my Unimat.
http://i306.photobucket.com/albums/n...psui2b95tc.jpg
Cut a blank for the Crystal:
http://i306.photobucket.com/albums/n...psjklbvw2g.jpg
http://i306.photobucket.com/albums/n...pscu6k6gfv.jpg
Profiled the outside to a nice bevel:
http://i306.photobucket.com/albums/n...psb1xdrtvg.jpg
and cut the inside
http://i306.photobucket.com/albums/n...psaxpysufe.jpg
I beveled a chapter ring into the case. Its going to look nice:
http://i306.photobucket.com/albums/n...psxlbdyevn.jpg
More to come at some point - I stil have to fit the movement to the dial, make a few more markers, some hands, and drill the case for the stem.
Then I probably need to make a stem and soem incidental bits and bobs.
Of course I also have to get the Porsche engine done and back in the car...
Dave