Next project... Stacking them up
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  1. #1
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    Next project... Stacking them up

    My next project has arrived.
    I have a half finished Porsche engine in progress, and that interrupted the making of a titanium watch case/enamel dial/blued hands, so this is in a queue.
    However I did say I'd post a picture when it got here, so here it is:

    They are investment case silicon bronze case blanks.

    With luck, effort, and a following wind I'll get to them before Christmas. Then That'll be the presents sorted ;)

    Dave
    Attached Images Attached Images

    Last edited by Dave S; August 31st, 2016 at 22:03. Reason: Attach pic / lost original text...
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  2. #2
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    Re: Next project... Stacking them up

    can't wait to see the next chapter

    I could list my watches here, but I won't.
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    Re: Next project... Stacking them up

    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 Im a Lumaholic...
    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.


    I've wanted to make a Carbon Fibre dial for a while, and so I dug out some thin CF sheet that I have.


    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.


    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:





    A 12 marker, yes I know its upside down, but until I fit the dial with feet for the movement I don't know where 12 is to drill the holes for fitting it:




    The casting needs a little work.
    I thought Id see how it would polish up on the case edges.
    Quite nicely it turns out:





    The back will be a snap on, made from Titanium.
    first make the square round:


    Thats about the right size:


    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.


    Then you can grip the part for turning


    If you look carefully you can see the 'snap' angle on the back piece. there is a matching bevel inside the case


    It needs the outside profiling, another soft jaw job



    Of course I need a crystal as well.
    I started with some crystal plate:


    And I bored the Case on my Unimat.


    Cut a blank for the Crystal:




    Profiled the outside to a nice bevel:


    and cut the inside


    I beveled a chapter ring into the case. Its going to look nice:



    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
    Learning Patience one dropped part at a time.

    On twitter: @SolutionsByDave

  4. #4
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    Re: Next project... Stacking them up

    Tonight I started on some hands.
    After some thought I decided that steel hands wouldn't work, and Titanium hands would look like steel.
    So I've decided on bronze.

    Of course I don't have any hand sized bronze sheet, but I do have a small lump of bronze I can hack a piece off:



    So I proceeded to break out the Carbide tooling and have at it
    Made some of the prettiest swarf I've made for ages.
    Its really good colours, it is hard to capture the depth of colour with my phone:





    The piece I hacked off was chuffing hot...

    Next bosh in the rotary table on the mill and mark out.



    I'm using the same hand design as for the Titanium Watch (Titanium case)
    as I've decided I need a signature style.

    Hour and Minute hands marked out:



    And roughly cut from the larger piece:



    More to come in the next few days.

    Dave
    Learning Patience one dropped part at a time.

    On twitter: @SolutionsByDave

  5. #5
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    Re: Next project... Stacking them up

    Roughly cut the hands out and laid them on the dial:



    There is more polishing work to do on the dial.
    But as a watch its going to look nice:



    There is a lot of filing and polishing to do. The hand blanks are rather thick, but at least I'll be able to give then a nice 3d shape.

    Dave
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    Learning Patience one dropped part at a time.

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  6. #6
    Member 1afc's Avatar
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    Re: Next project... Stacking them up

    Quote Originally Posted by Dave S View Post
    Roughly cut the hands out and laid them on the dial:



    There is more polishing work to do on the dial.
    But as a watch its going to look nice:



    There is a lot of filing and polishing to do. The hand blanks are rather thick, but at least I'll be able to give then a nice 3d shape.

    Dave
    All nice work so far.

    Am I just seeing things or did the minute hand get longer in the second photo?

    I don't know anything about hand manufacturing so dismiss as necessary but I'd be thinking
    1. you wouldn't want too much weight on the hands as the movement gears are not meant to "lift heavy things" and
    2. I'd expect that you would need a bit of flexibility where the hands go on to the canon pinion. It seems usual for the hands to have a flange that pushes over the pinion for a good friction fit and also a bit of "give" to expand.

    There are always a lot of questions about hands in the forums so I'm sure you'll get lots of questions.

    Full steam ahead.

  7. #7
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    Re: Next project... Stacking them up

    I find these types of threads very interesting and look forward to your future progress.

    I wish I had access to the same tools and training...

  8. #8
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    For the initial shaping a pin vise and some blue - so I can see where I'm filing







    Starting to get more Hand Shaped







    Once it gets reasonably close then a different support is required.







    Hard to photograph with my phone camera, but you can start to see the faceted shape









    Once I got the top reasonably close I needed to thin the hand somewhat.

    I should probably make and actual jig for this at some point - it will be needed to black polish. For now however a piece of HSS, and a scrap of the same thickness will do







    Rub on various stones to reduce the thickness evenly





    Next time I have to make some thin material I'm going to make it closer to the thinness I actually need...



    Hour hand next



    Dave
    Last edited by Dave S; January 19th, 2017 at 09:33.
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  9. #9
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    The blanks are fairly heavy right now, but they are about twice as thick as they should end up.
    I made the hands for the lumoholic watch from steel shim stock in a similar manner, so I know the hole sizing I need.

    Dave

  10. #10
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    Re: Next project... Stacking them up

    Tonight some hour hand magic

    Starting with a rough cut Hour hand blank



    bit of filing to sort the edges and the blank is ready to shape in more detail



    So glue it to a Stanley knife blade



    and start with the faceting



    Its important to keep the two side even, or a wonky hand will result



    Then the back facets



    thin it down, just like the minute hand



    Both of them now need polishing to (hopefully) black perfection. Then they can patina nicely as the watch ages.

    Dave
    Learning Patience one dropped part at a time.

    On twitter: @SolutionsByDave

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