Devfus foam

Discussion in 'Composites' started by stanislavz, Sep 26, 2019.

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  1. Sep 26, 2019 #1

    stanislavz

    stanislavz

    stanislavz

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    Wanted to post it into current cnc foam cutter thread, but I think, it is worth separate one. Making a fuse mold from foam slices.

    [​IMG]

    Using this piece of software : http://www.devcad.com/eng/devfusfoam.asp

    Tried with 10000 mm long fuselage, and 100 of slices - looks to be working slow, but ok. And you can make even thinner one slices, but cutting from same piece of foam, make sanding close to none,, and with foil on foam plug making - do it in really fast manner.
     
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  2. Sep 26, 2019 #2

    stanislavz

    stanislavz

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    15 minuts of work.. as4-115

    [​IMG]

    [​IMG]
    [​IMG]

    Optimized to cheap cutting from 100mm, 200mm and 500mm long blocks..

    [​IMG]
     
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  3. Sep 27, 2019 #3

    wanttobuild

    wanttobuild

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    Totally Awesome Dude!

    That method is new to me, and now have me reconsidering the materials I was going to use for my design. Thank you so much for sharing your awesome methods.
    You know a hot wire and some blocks of foam a regular homebuilder could cut out some radical fuselages.

    You are the KING in my opinion!!!!!!!!!

    Ben
     
  4. Sep 27, 2019 #4

    wanttobuild

    wanttobuild

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    You are gonna have ALOT OF SALES
    You are gonna create a whole NEW level of airframe building!!!!
     
  5. Sep 27, 2019 #5

    wanttobuild

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    Please tell the WORLD more about your product.
    I gotta say this is gonna open up a lot of design possibility minus the nightmare, complex mold building.
    The thing that jumps out at me is how simple it would be to optimize each individual slice.
    Hard point installation simplified!
    Futher optimize by hotwireing the "slice into inner and outer " cut lighting holes, epoxy back together!
    An incredibly light part!!

    Did I already say you are the KING?
     
  6. Sep 27, 2019 #6

    Hephaestus

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    Does it export in step/iges format - that's the real question now ;)
     
  7. Sep 27, 2019 #7

    stanislavz

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    1. It is not my product. Nor it is new one.. Download ut, and try. It is free to try and ply with it..
    2. Yes, it did export to g code/step + simulation.

    [​IMG]

    [​IMG]
    [​IMG]
     
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  8. Sep 27, 2019 #8

    wanttobuild

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    Thanks for sharing!
     
  9. Sep 27, 2019 #9

    billyvray

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    I next want to build a cnc foam cutter. Here is one inspirational video. This guy builds whole RC planes from this software.

     
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  10. Sep 27, 2019 #10

    stanislavz

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    Any suggestion on what to design next ?
     
  11. Sep 27, 2019 #11

    Hephaestus

    Hephaestus

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    KRSym.png

    Kr2 without slab sides o_O

    If you wanted to work up a ply schedule too I'd be all over that lol
     
  12. Sep 27, 2019 #12

    wanttobuild

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    Yes
    A rotary powered Bearhawk LSA!
    Just kidding of course.
     
  13. Sep 27, 2019 #13

    stanislavz

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    This one ?

    [​IMG]
     
  14. Sep 27, 2019 #14

    Hephaestus

    Hephaestus

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    That is a KR2!
     
  15. Sep 27, 2019 #15

    wanttobuild

    wanttobuild

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    I think a KR Super 2 would be a better choice
    A Mazda ( Twin Rotor) Rotary Powered KR Super 2!
    That's the ticket
    Learn more @ krsuper2.com
     
    Last edited: Sep 27, 2019
  16. Sep 27, 2019 #16

    Hephaestus

    Hephaestus

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    The pic I posted was my personal project. Basically slimming up the kr2 for more of a fat man's single place (30" wide), with the standard 14' longerons stretch that's usually being done now.

    Used symmetry's turtle deck and lower fuselage curve. And the new AS504* airfoils
     
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  17. Sep 27, 2019 #17

    stanislavz

    stanislavz

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    Give me top and side view then.. + some cross cut..
     
  18. Sep 27, 2019 #18

    Hephaestus

    Hephaestus

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    KrSuper2 has been dead for a few years now. Unfortunately the plans never had a lot of the issues of their design resolved.

    However, a full composite KR2 is likely in my future, just pushes my math skills. And CAD skills if you notice how bad the ballpark of the longez canopy fits the fuselage :confused:
     
  19. Sep 27, 2019 #19

    wanttobuild

    wanttobuild

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    Dead?
    The killer for the 2 was the core foam choice.
    In my opinion, the OP has introduced the super2 resurrection.
    This method could put the 2 in a whole new light.
     
  20. Sep 27, 2019 #20

    Hephaestus

    Hephaestus

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    September 2014 was the last update of the super2. So 5 years later yes dead.

    Cnc hotwired foam makes a lot of sense. Big "dock foam" EPS blocks are cheaply bought local, and can be hotwired...
     

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