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IndustryArena Forum > Hobby Projects > Parts for Radio Control Models > 3D foamy airplanes cut with the CNC
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  1. #1
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    3D foamy airplanes cut with the CNC

    Last weekend I found some plans on the internet in PDF format for 3D foamy R/C airplanes. I thought it would be great fun to cut them out on the CNC. I have generated some tool paths for a couple of airplanes if anyone is interested.

    One is for an F18 Jet and the other is for a Edge.

    Greg

  2. #2
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    Sure upload them here in a txt file.

  3. #3
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    Quote Originally Posted by gregmary
    Last weekend I found some plans on the internet in PDF format for 3D foamy R/C airplanes. I thought it would be great fun to cut them out on the CNC. I have generated some tool paths for a couple of airplanes if anyone is interested.

    One is for an F18 Jet and the other is for a Edge.

    Greg
    Yea, can u upload them and also tell stock and tool used, I have been wanting to make one for my daughter, but just have not had the time, the F18 would be kewl also..

    Thanks, Joe

  4. #4
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    I have files for the f-18 and f-15 all finished layed out for 2x4' pieces of dow fan fold foam. The files are set up for a 1/8" cutter using sheetcam. The process i found to work good is open the PDF in adobe Illustrator export it as a dxf and then I check scale and clean up the drawing in Rhino and then on to sheetcam.
    Shoot me an email for the files and i'll send them out.
    Darren
    cncdarren@hotmail.com

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    Just a quick question for you guys, What bit are you guys using to cut the foam? I have been using a single flute 1/8" bit but I have been having problems with the foam mealting and sticking to the bit. I have tried from 15-30 ipm and it still happens sometimes. using a 1/4" trim router for the spindle I havent tried slowing it down. I also have a dremel multi speed tool i am thinking about making a mount for and using that as it should have enought power to cut thru the foam.

    Darren

  6. #6
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    Quote Originally Posted by CNC Darren
    Just a quick question for you guys, What bit are you guys using to cut the foam? I have been using a single flute 1/8" bit but I have been having problems with the foam mealting and sticking to the bit. I have tried from 15-30 ipm and it still happens sometimes. using a 1/4" trim router for the spindle I havent tried slowing it down. I also have a dremel multi speed tool i am thinking about making a mount for and using that as it should have enought power to cut thru the foam.

    Darren
    You know if you could just make an attachment that would connect to the existing router mount and have a lead downward, and have elec. go through it to heat it up similaer to the Foam Cutting cnc's. You could make stock stand off's to raise the foam odd cutting bed.

    Just a thought

    Joe

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    heheh the idea already crossed my mind, i'm thinking of a soldering iron with the tip turned down in diameter.

    Darren

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    Quote Originally Posted by CNC Darren
    heheh the idea already crossed my mind, i'm thinking of a soldering iron with the tip turned down in diameter.

    Darren
    Kewl, like to see what you come up with. a milling foam cutter.

  9. #9
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    I have been using a .125 dremel drywall cutting bit. They work bretty good as long as you move pretty fast and run the tool just above stalling out. I still get a bit of melting. I do need to clean the bit every few panels. On parts that come to a point you can see the foam pullinging into the point due to the minimal amount of material. If anyone has a better way, let me know.

    Attached are some IGES files for a 3D faomy model of the EDGE. There are 4 files for four sheets of foam.

    If you need tool paths let me know what kind of machine and I can gen 'em up.

    Greg
    Attached Files Attached Files

  10. #10
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    I tried a 3/16 carbide up sprial bit and it works very good! no melting at all running at 25ipm. got the F-15 cut today, assembly begins tomarrow.
    Darren

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    Greg

    Would it be possible to upload the "edge" file in DXF?

  12. #12
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    Edge in DXF

    Sure, I can upload the DXF file. I get it to you tonight when I get home.

    Greg

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