Totally non gun related but kinda neat

Discussion in 'Gunsmithing' started by NesikaChad, Sep 2, 2009.

  1. NesikaChad

    NesikaChad Well-Known Member

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    I'm a giant scale RC airplane 3D addict.

    We are hosting a big fly in at the Buffalo Chip Campground Sept 11, 12, 13.

    Black Hills Air Rally

    I offered to donate some (which has turned into a pile) machine time to whittle up the trophies.

    Here's a toolpath simulation of what I came up with. It's running now. These are 5" OD X 1/2" thick annealed brass plates.

    They started out as just a sort of plaque to hang on the wall but I've since then come up with the idea of having them be coasters for some nice beer mugs that will also be engraved. Just something different. At most of these events you get a $3.00 plastic trophy.

    Thanks for lookin.


    Chad

    [​IMG]


    And (drum roll please) here's a finished one:

    [​IMG]
     
  2. AJ Peacock

    AJ Peacock Well-Known Member

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    Awesome, if I won something like that, I'd never put a mug on it!

    I've won plaques, medals and trophies (shooting related), and only one of them is even in the same ballpark as that trophy.

    Nicely done!

    AJ
     

  3. prtaylor

    prtaylor Well-Known Member

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    Great work. Whoever wins that is going to be amazed.
     
  4. NesikaChad

    NesikaChad Well-Known Member

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    Here's the rest:

    [​IMG]

    [​IMG]
     
  5. jmason

    jmason Well-Known Member

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    You've got a really cool and rare talent!
     
  6. Romeyo

    Romeyo Member

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    Wow. They're bigger than I would have guessed... look really well done!

    How long did it take to create the vector graphic for engraving and milling the rest of the shape?

    regards
     
  7. NesikaChad

    NesikaChad Well-Known Member

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    Programming was relatively easy.

    Just a matter of generating the geometry and then assigning tool paths.

    Machine time was long because of the island pockets (raised text) I had to use a .0625" endmill and with a spindle speed of 4,000 I can't push very hard.

    Took about 2 hours per part all told.

    They are 5" in diameter and 1/2" thick.

    Thanks for the kind words.

    C
     
  8. specweldtom

    specweldtom Well-Known Member

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    Chad, the "smokin' hole" trophy would almost be worth giving up a plane for. The most memorable wreck I've seen was a beautiful about 5" span Stuka that augered in. They went out with a wheelbarrow and shovel to pick it up. I felt really bad for the guy, several were in the air and he lost his and was "controlling" the wrong one. This award would at least be some compensation.

    Good shooting, and good flying! Tom
     
  9. NesikaChad

    NesikaChad Well-Known Member

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    We almost had a candidate for that award before the rally even started.

    Monday we (actually, the rest of the guys cause I took my little urchins shooting all afternoon) set the field up and a buddy with a 100cc gasser Yak 54 came in a little hot on his final and couldn't get his plane slowed down quick enough.

    The 8' chain link fence at the end of the field serves as a very efficient backstop for airplanes.

    Luckily all that was hurt was his pride and a $100.00 carbon fiber prop.

    It's about a $4,500 plane so I think he came away pretty fortunate.

    Here's my Yak 54 with a 100cc Desert Aircraft Twin. Runs on gasoline.

    [​IMG]

    [​IMG]


    Testing out the new smoke system!!
    [​IMG]
     
  10. specweldtom

    specweldtom Well-Known Member

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    WOW !

    Did the 'hopper on the tank just show up for the picture, or did he get the ride of his life?

    Tom
     
  11. NesikaChad

    NesikaChad Well-Known Member

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    Hoppers have been terrible this year due to all the moisture we've received.

    It's like a sick (but funny) genocidal thing when taxiing down the runway cause they all jump right out in front of a 26" prop, get "processed" and then deposited all over the cowl, canopy, and leading edges of the wings and control surfaces.

    Lots of windex and goof off after a flight which really sucks cause the three coats of carnuba wax on the plane doesn't last long that way.

    Little bastages. . .
     
  12. specweldtom

    specweldtom Well-Known Member

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    Damn hopper strikes!
     
  13. jmason

    jmason Well-Known Member

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    100cc engine!! My daughters 4-wheeler only has a 90cc engine.:rolleyes:
     
  14. NesikaChad

    NesikaChad Well-Known Member

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    100cc-er's are the "mid size" now adays.

    Check out Cactus Aviation in Tucson, AZ. They are the importer for 3W engines.

    There's a 150, 175, 180, 200, 220, 240, 270, etc. . .

    Four cylinder dual carb monsters.

    Then you can get into the really rare radial Moki engines that approach 400-500-600 and on up to over 1000 cc's.


    My planes are no larger than 33%. There are 40, 43, 50, 60, and I've even seen a 70% size as well.

    Just takes money. . .