Wobblycogs Workshop

Tag: Wyvern

  • Wyvern – Mounting Plates – Day 7

    Wyvern – Mounting Plates – Day 7

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    Doozer
    in

    After much dithering I decided to go with the 2510 screws and some powerful nema 34 steppers. I’ve not picked the motors and drivers yet but looking at what’s been recommended to me by others I can clearly get something that will work in a 34 package so it’s time to press on with the…

  • Wyvern – Ball Screws – Day 6

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    Doozer
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    In an effort to keep the screw length down I moved things around in the design and did a stack of calculations for different screw and motor sizes and then did a bit of pricing up. This spanned a couple of days and a lot of discussions with people that know far more about CNC…

  • Wyvern – Ball Screws – Day 5

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    Doozer
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    So it turns out that 1500mm is a magic length for home made CNC machines, who could have guessed. My new super long 1800mm design is going to cause me some problems and I have to decide whether it’s worth pressing on with this design or dropping back down to 1500mm.

  • Wyvern – Frame Design – Day 4

    Wyvern – Frame Design – Day 4

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    Doozer
    in

    After chatting with some of the guys on the MYCNCUK forum it seems steel is a lot cheaper than I thought it was. In fact 50x50x4 mild steel box section can be had for almost the same price as and equivalent piece of PAR pine. When you consider what goes into steel construction compared to wood production…

  • Wyvern – Frame Design – Day 3

    Wyvern – Frame Design – Day 3

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    Doozer
    in

    Having realized that SBR20 rails are 45mm wide I scrapped the 80x40x4 box section in favour of 50x50x4 – should have checked that before designing the thing I suppose. I then plugged the figures into the gantry stiffness calculator and, if I understand it correctly, I should be getting a maximum deflection of about 50μm with a…

  • Wyvern – Frame Design – Day 2

    Wyvern – Frame Design – Day 2

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    Doozer
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    So there was quite a break between day one and two of this CNC build which was probably a mistake but nowt I can do about that now. After much debate my better half has convinced me to try building the CNC as my Christmas project. I’m planning on trying to get the mechanical side…

  • Wyvern – Home Made CNC – Day 1

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    Doozer
    in

    After several seconds of hard thought I’ve come up with a name for the machine the “Doozer V1”. My nick name is Doozer and I can’t think of a better (imaginary) creature to name the machine after than one that spends it’s days building things. After tiring myself out thinking up a name I didn’t…

  • Wyvern – My First CNC

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    Doozer
    in

    For years now I have wanted to build a CNC machine. I don’t know why they have just captured my imagination and stuck there. I think it might be the mix of skills required that appeals, woodwork, metalwork, electronics and software. I’m fortunate that I have a good understanding of the software side of things…