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Just found an interesting project that may go to Kickstarter.

Discussion in 'General Talk' started by bobt, Sep 21, 2014.

  1. bobt

    bobt Veteran
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    This is a project for a 5 axis machine and they are just sharing there info just now BUT I bet we could make a better one from Marks parts and a lot cheaper.

    Quoted from site:
    This machine uses Mach3 controller and we are developing a CAM script in Grasshopper that works on Rhino. The script is free and open source you can download current version (Its a very early versions and we will continue developing it and adding features as the project progresses) from 5axismaker.com/software// ( you need both Rhino3d and Grasshopper to run it ).

    Kickstarter page:
    https://www.kickstarter.com/projects/2003668803/176246113?token=d39a4343

    Very interesting.

    Bob
     
  2. Robert Hummel

    Robert Hummel Custom Builder
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    I like the fact they use an RC Spindle ;)
     
  3. GrayUK

    GrayUK Master
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    Looks interesting. I`m sure the guys here could design the axis gearbox.
    The idea is feasible from a CNC and probe point of view. Don`t know about the printer.
    Hope it works for them. I think that if they concentrated on a cheaper 5 axis CNC alone it may well do better.
    Still we can do that.
     
  4. JustinTime

    JustinTime Master
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    ,Wow, 4,500 pound sterling??? Which is darn near $7,000! I wonder how many people here spent more than $1,500 on their machine, let alone $2,500 and they ask for $7,000? They have guts, I have to give them that. lol

    I love the articulated spindle. Could be very useful.
     
  5. Rob Taylor

    Rob Taylor Veteran
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    The 2-axis gearbox is very easy, it's just a couple of (low-backlash?) worm gear drives perpendicular to each other in a cast aluminium case.

    I feel like the printing and probing would have been better left to lab hackers and instead worked on bringing desktop 5-axis to the masses for a sub-£2000/$3000 pricepoint. I think the market's there for cheap small-scale precision subtractive machining.

    RC spindles: the page says it maxes at 1kW. If this means. say, 48V at 20A (or whatever you can squeeze through an ESC), would that have a performance parity with one of those dedicated 120V 800W spindles? Or is this really just a foam/plastic pre-vis tool?

    I'm also thoroughly interested in the software toolchain they're thinking about. I opted not to go 5-axis with my latest ideas because I assumed the (cheap/free) software wouldn't be there, and I don't know how many years I am from figuring out machine control from first principles. Sounds like it's worth taking a look at.
     
  6. JustinTime

    JustinTime Master
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    I don't think a 1kw rc motor is comparable to 1kw 120v motor. My motor looks identical to their motor and I will not even try to make a deep cut in aluminum or wood which you may do with the 120v motor. Also, when I fed my rc motor 24v it got hot. I now run it on 14v and it barely gets warm. At 14v I'll have to run it with 70a to get 1kw, and I don't even come close to that. To get the 1kw you really have to crank up the revs and you don't want to do that. At some point the bit revs so fast that it gets hot and the material will melt, if it is foam, and burn, if it is wood unless you increase the feed rate, which you may not be able to since the whole machine, or just the spindle, may stall.
     
  7. Rob Taylor

    Rob Taylor Veteran
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    That was my assumption, the kW rating seemed pretty dubious to me. Thanks for clarifying!
     
  8. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    The project has now gone live. It might be worth jumping in at the £50 level just for the software information it would provide.
     
  9. Dave Millard

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    Interesting project.

    I am not sure of the benefit of the completely multifunction machine for the price. The 5 axis mill on its own is pretty great.

    It is not that important whether this does become a commercial success (except for those involved of course). But their thinking and technology does provide shoulders for others to stand on.
     
  10. GrayUK

    GrayUK Master
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    Absolutely!! :thumbsup:

    Marks shoulders have got loads and loads of footprints on them! :D :thumbsup::thumbsup:

    He is a little bent over now, I've heard.

    Gray
     
  11. Dave Millard

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    ;)
     

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