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  1. #41
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    Pretty interesting thread! Great to see the machining details and pics

  2. #42
    Member ArdorandForge's Avatar
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    Re: Field Watch Making Project

    Watching the process here is pretty cool...always love seeing the process behind the build!

  3. #43
    Member INTERIMLAMB's Avatar
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    Re: Field Watch Making Project

    Hello!
    3d printed parts arrived from Shapeways. I would like to see what it looks like.
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    Those materials are printed with resin PA12 by HP Multi Jet Fusion. As you can see in the picture, just as expected, the surface is rough and not very smooth.

    The letters on the bezel have a line width of about 0.5 mm, but its finish is not clean. The part where the letter is clogged is especially wavy and lacks smoothness. By the way, I changed from Yamakami to Yamagami.
    The jagged edge of the bezel is not sharp so much. I thought it might be better not to put letters on the bezel.
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    I think that depending on the printing direction, vertical holes do not have a problem, but horizontal holes tend to collapse.
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    Press the 1.4mm thread insert nut into the case.
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    This is a spacer. As we wanted flexibility only in this part, we chose ordinary nylon plastic.
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    All parts are not complete, but for now we will assemble.
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    Fit the spacer on the inside of the body and put the gasket in the groove. Is the groove a little too deep?
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    Tighten the back cover with 4 screws.
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    It's done like this in no time.
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    Let's make NATO strap through the case. And on my wrist. . .
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    I would like to pursue more surface smoothness and detail accuracy. I will change the material and try again.
    Thank you!
    dspt likes this.

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  5. #44
    Member rybo's Avatar
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    Re: Field Watch Making Project

    Awesome thread, love seeing the machine work and process behind it. Can't wait to see more

  6. #45
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    Re: Field Watch Making Project

    Looks great!

  7. #46
    Member INTERIMLAMB's Avatar
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    Re: Field Watch Making Project

    This is a long time post.
    I have had to concentrate on manufacturing this jumping hour watch for several months. This is an order from a foreign customer.
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    While doing that mentioned watchmaking, I reformed my design at some points.The letters on the bezel was removed and made its ridges larger. Lug bars became slightly thinner, case back was reformed thicker. I decided not to give a specific model name to it.
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    Of course, I didn't forget my own this field watch project. I received MJF printed watch cases the other day. Black and gray colored.
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    At first, I intended to change material, but I decided to keep it as MJF PA12. To tell the truth, I tried SLS PA12 by high definition layer thickness, but it didn't bring satisfaction, because it had not good accuracy in size so much. I don't recommend SLS printing method for watch cases.

    Well, I'm going to start temporary assembly. By the way, dials are not printed yet for now, though the design of dial has been finished mostly.
    As I thought polished crown would not suit to this sporty watch, I applied hair-line finish to them on the lathe. Crown tube was press-inserted by vice.
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    The crown, which is 6.5mm dia, was set temporary like this.
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    Next, M1.4 insertion thread were screwed down to the case. We can sink them easily by screwing clockwise.
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    I prepared 1.5mm thick mineral glass and gasket. We must care glass gasket has up-down direction.
    Glass was pressed carefully with a vice.
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    That's all for today. Thank you!
    Chascomm, dan13rla and blobtech like this.

  8. #47
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    Re: Field Watch Making Project

    Have you tried using Shapeway's 3D steel printing? I saw they offered many other metallic materials as well. I'm not sure if changing to a metallic material will produce finer resolution/detail than the plastic for you but it might be worth it?

  9. #48
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    Re: Field Watch Making Project

    interesting to see the jump hour project. from the picture it seems you have two 12-teeth gears to achieve the jumping effect. very simple solution, and I wonder if it allows for the hour to jump instantly and exactly at proper time. also, it looks like the hour hand doesn't point to an exact hour mark.
    is there a place one can learn more about your jump hour modules?

  10. #49
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    Re: Field Watch Making Project

    Would love to see more on the jumping hour watch you showed us? Looks very cool! I really like it!

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