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Thread: Ideal CNC

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    Registered User Atomic_Sheep's Avatar
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    Ideal CNC

    If you could build a CNC for building planes the size of a Cessna 172, what CNC table dimensions would that translate to?

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    Registered User Little Scrapper's Avatar
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    Re: Ideal CNC

    I needed a laugh this morning and this post supplied that.

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    Re: Ideal CNC

    Are you going to make a one piece mold, or are you going to make up the plans from small pieces? What are going to CNC? Wood, metals, plastic, composites? Are you going to have any hand finishing or will all parts have to come out of the CNC finished? Are you going to have specialized CNC machines for specific jobs like 7 axis mills or table 3 axis. Mills? Plasma? Waterjet? How much money can you devote to the machines?

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    Registered User Chris In Marshfield's Avatar
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    Re: Ideal CNC

    If it was me, and I was "kitting" a plane one day, I'd probably use a 4x12 (or larger) version of the Laguna Tools SmartShop CNC to turn rectangle-shaped aluminum sheet into airplaned-shape aluminum flat parts. It's mainly because I'm a sucker for a cool demo video and sales pitch.

    http://www.lagunatools.com/cnc/SmartShop
    Last edited by Chris In Marshfield; December 5th, 2016 at 11:28 AM.
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    Re: Ideal CNC

    6x12x3 is probably the ideal work envelope for most anything without going to something wild like the cnc makes that build modular homes. You can trim that down as you see fit.

    Minimum would probably be 2x4 to be useful
    Designing and Building WWII replica fighters. US Dealer for Verner Motor
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    Registered User Little Scrapper's Avatar
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    Re: Ideal CNC

    I thought he was talking about building a 30' long CNC, which is why I was laughing.

    Carry on. Haha

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    Moderator Topaz's Avatar
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    Re: Ideal CNC

    Quote Originally Posted by Atomic_Sheep View Post
    If you could build a CNC for building planes the size of a Cessna 172, what CNC table dimensions would that translate to?
    What's the size of the biggest part for which you want to make a mold/plug?
    "If you have built castles in the air, your work need not be lost; that is where they should be. Now put the foundations under them." - Henry David Thoreau

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    Re: Ideal CNC

    Scrap, you let him off too easy.

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    Registered User Little Scrapper's Avatar
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    Re: Ideal CNC

    I know. It's the new me. Ever since I gave up meat and became a vegan I'm like a totally different person.

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    Re: Ideal CNC

    Dang no meat, thats like saying your going to build a RV. Glad you can pull it off.

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    Re: Ideal CNC

    CNC is so passé; I'm holding out for a 40 foot X 30 foot 3-D printer that will print oriented carbon nano tubes.


    BJC

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    Registered User Little Scrapper's Avatar
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    Re: Ideal CNC

    Quote Originally Posted by TFF View Post
    Dang no meat, thats like saying your going to build a RV. Glad you can pull it off.
    I'm down 42 pounds now, feel better than I ever had. My knee pain is 100% gone.

    I was on the edge of heart attack and elected to not let them work on me. With my diet my numbers are dropping so well.the doctors are literally blown away.

    Anyhow. Carry on.

    I always thought a 1' x 1' CNC would be cool. A customer of mine built a 4' x 8' CNC for his wood shop. It's truly amazing, but he spent 2 years building it in his spare time.

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    Re: Ideal CNC

    I've been no meat, no dairy and no added oil for 4 yrs now.

    Don't fall into the junk food vegan trap and you'll be fine.
    “The only difference between reality and fiction is that fiction needs to be credible.” - Mark Twain

    “If you can't dazzle them with brilliance, baffle them with bull$hi+.” ― W.C. Fields

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    Re: Ideal CNC

    Quote Originally Posted by Atomic_Sheep View Post
    If you could build a CNC for building planes the size of a Cessna 172, what CNC table dimensions would that translate to?
    Do you want a CNC that mills? One that turns? I don't think you can build a CNC that allows one to load a 30ft billet of aluminum and cut away everything that doesn't look like a plane.
    “The only difference between reality and fiction is that fiction needs to be credible.” - Mark Twain

    “If you can't dazzle them with brilliance, baffle them with bull$hi+.” ― W.C. Fields

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    Registered User FritzW's Avatar
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    Re: Ideal CNC

    If this gizmo works out it wouldn't matter how big your parts are




    FWIW my machine is 4x8 (52" x 104") but it'll cut any length in 8' increments. I'm limited to about 40' because the distance from the end of the table to the garage wall is about 20'.

    Or, how about a Carvewrite machine? (post #20 here) It'll cut any length but it's limited to 14" wide and, IIRC, ~6" on the Z.

    Click image for larger version. 

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    Iēsous Christos, Theou Yios, Sōtēr

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