scratchbuilding UP CA3

ZFRANK Apr 11, 2011

  1. ZFRANK

    ZFRANK TrainBoard Member

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    Hi all,

    See the work in progress of my latest caboose...... :)
    It is still far from complete, but eventually it should look like a UP CA3 more or less.
    Build from Evergreen styrene.

    [​IMG]
     
  2. minzemaennchen

    minzemaennchen TrainBoard Member

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    Frank, looks great. Keep us up to date.
     
  3. rray

    rray Staff Member

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    Awesome work Frank! That's going to be another real nice caboose for your collection! :D
     
  4. John Bartolotto

    John Bartolotto TrainBoard Supporter

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    Frank,

    Beautiful! How did you make the steps?

    Yours,

    John
     
  5. ZFRANK

    ZFRANK TrainBoard Member

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    I will keep you updated regarding progress...

    John, the steps are made out of square evergreen strips (.060x.060" /1.5x1.5mm). First I glue two pieces (of approxomately 4mm length) together. When the joint is strong enough this assembly is glued to the car chassis. Eventually the sanded / filed to the right width. Afterwards the side plates are glued on and shaped with a file.
    Next might help to clarify.

    [​IMG]
     
  6. BNSF Dash 9

    BNSF Dash 9 TrainBoard Member

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    Nice! What a classic UP image! :tb-biggrin::thumbs_up:
     
  7. Joe D'Amato

    Joe D'Amato TrainBoard Member

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    Very nice!

    Plastruct makes a number of different sizes of stair stock in their range that makes these steps much easier to do. A few of them are v-formed so you get the backside detail and others are injection molded out of styrene. Give it a look.

    Joe
     
  8. ZFRANK

    ZFRANK TrainBoard Member

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    Joe,

    Thanks for the tip, Plastruct indeed has a lot of interesting scratch build parts!
     
  9. ZFRANK

    ZFRANK TrainBoard Member

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    ....the roof is closed now.

    ....the roof is closed now. The front and rear roof should get the same detailing as the cupola roof. :D

    [​IMG]
     
  10. ZFRANK

    ZFRANK TrainBoard Member

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    most of the body work is done now! :D

    [​IMG]
     
  11. JoeS

    JoeS TrainBoard Member

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    Fantasic! Measuring and cutitng platic with a ruler and a knife and getting what you got! Great job!
     
  12. up mike

    up mike E-Mail Bounces

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    Lookin' good Frank :thumbs_up:
     
  13. MOW

    MOW TrainBoard Member

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    Great job Frank. How do you do the rivets?
     
  14. ZFRANK

    ZFRANK TrainBoard Member

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    The sides are just 0.5 mm thick styrene sheet. The rivits are punched with a needle from the backside while the sheet is in a some what soft surface (e.g. a newspaper)
     
  15. Z_thek

    Z_thek TrainBoard Member

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    Another, even quicker and very accurate way to make rivets on thin styrene or brass is to sharpen a very fine steel gear, fit it over a shaft, so it rolls nicely, than build a tool like a small pizza cutter with a flat guide surface, so it can be accurately guided by a ruler.
     
  16. HoboTim

    HoboTim TrainBoard Supporter

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    Too Cool!!!

    That is a great idea for a rivot roller. I'm gonna have to make me one or two of them!!!

    On the Caboose!!! WOW!!!!!!!! It's too bad the sides are so thin or you could probably make a RTV mold of it and cast many upon many of these cabeese for your pleasure and others!!!!

    Praise goes out for the Scratchbuilders!!!!

    Hobo Tim
     
  17. Z_thek

    Z_thek TrainBoard Member

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    When I used this technic (back in the N-scale years, around 1970), I built my cars from a solid acrylic block, drilled for ligths, etc, then added the details in layers. I didn't even cut the windows, just filled in the space between the horizontal runs with styrene strips or larger pieces as needed. That was very quick and accurate. You can substitute the acrylic block with a clear styrene or some other type of plastic rigid box. Before painting I just lightly oiled the windows.
     
  18. JamesTraction

    JamesTraction TrainBoard Supporter

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    Sounds like you're describing a pounce tool, Lajos. But I don't know if their points on the wheel are spaced good for this work. Frank, what was the spacing you used?
    -James
     
  19. Z_thek

    Z_thek TrainBoard Member

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    One thing is 100% sure, that tool didn't exist in the communist Hungary in 1970. I made my tool using a gear with very fine teeth from a "quality" dead watch made by the Soviet.
     
  20. ZFRANK

    ZFRANK TrainBoard Member

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    Good idea with the old gear Lajos!

    James, rivet spacing on my caboose is approximately 0.5 mm / .0196"
     

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