Cows

Discussion in 'G3' started by Mike W, 12 February 2020 at 20:29.

  1. Mike W

    Mike W Western Thunderer

    Yes, cows. The sort currently blamed for global warming. I need some for another Gauge 3 cattle wagon but most toy versions are too large. Years ago Pat Maslin supplied me with some but she has since given up her dolls house business.

    I did buy one from a well known garden railway supplier a few years ago as they assured me they fitted inside a Gauge 3 cattle wagon, and it sort of does - standing on its own longitudinally in the centre! The usual Schleck are too large as they need to fit across the wagon - 100mm overall length! Long horn would be nice but really anything will do.

    Any suggestions please?

    Mike
     
  2. Ian_T

    Ian_T Active Member

    And I'd like a G3 horse (or two) Mike.

    3D printing has to be one possible solution to this problem but I'm not clever enough to design one for myself and although there are cows (and horses) on Thingiverse - they will most likely need scaling (which is possible in Cura as Ralph has mentioned elsewhere). I've also found some 1/24th 'people' on TV but I haven't tried printing any yet...still playing with vacuum hose adaptors and similar workshop stuff.

    IanT
     
  3. Mike W

    Mike W Western Thunderer

    You set me thinking Ian and there is one on Shapeways which claims to be 1:24, but at £28 that makes a wagon full cost considerably more than the wagon itself.

    Mike
     
  4. Sleeper Agent

    Sleeper Agent Member

    I did try having a good look about yesterday but they were all around 13cm long or a fortune i'm afraid. To clarify you say they need to be no longer than 10cm? I can ask one or two G1ers I know for some dimensions but the height of the models used in a certain TV show will likely be too low.
     
  5. Mike W

    Mike W Western Thunderer

    Thank you. Yes, a Gauge 3 cattle wagon is roughly 100mm wide. Heads can be turned or bits chopped off (ouch!) and I usually alter them so they're not identical anyway, but around that.

    Mike
     
  6. Ian_T

    Ian_T Active Member

    Just out of curiosity Mike - I downloaded a "Cow" .stl file from TV and loaded it into Cura. It was quite a small cow (about 18mm along the Y axis), so I scaled it x4 on all axis and then sliced it...so in theory this is now printable but in practice it looks like some careful support will be needed (and also perhaps some variable 'infill') - which I know can all be done using Cura if you are a Whizz...which I'm not at the moment I'm afraid...

    upload_2020-2-13_15-30-2.png

    Busy printing other parts at the moment but (in principle) it seems 3DP 'Cows' might be do'able without going crazy on costs - if we can eventually figure out the more esoteric stuff...

    Regards,

    IanT
     
  7. simond

    simond Western Thunderer

    Ian,

    we use Cura with an Ultimaker at work, though I’m far from expert with it. I suspect you could save both resin and support material by doing a bit of reverse butchery with your cow.

    Assuming you’re using FDM, it would probably be easiest to bisect the beast vertically, and print the two halves - which could be hollow or simply low density fill with a shell. They can then be glued back together.

    Given that the details of the underside are probably hidden in the shadows, it might even be worth slicing into more parts. A central slice & two sides would allow the legs to be printed directly on the support plate, with, perhaps, no support material at all, although I imagine you might want to print the head separately in this case.

    Perhaps worth noting that a quick blast with the hot air paint stripper will allow some creative posing of your bovine products...

    hth
    Simon
     
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  8. Jelle Jan

    Jelle Jan Member

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  9. Mike W

    Mike W Western Thunderer

    Thanks Jelle Jan. Not sure that I've seen those before. Will check them out for size.

    Thanks also Ian - fascinating and I guess some of the worst surface finishes seen on solid printed parts are not important here!

    Mike
     
  10. Ian_T

    Ian_T Active Member

    Hallo Simon,

    I've managed to lay the beast over on it's side and lower it into the (Cura) floor, which should be easier to print I think (less support needed).
    The cow model is not quite symmetrical in shape but I think it would print OK in halves (given a bit more understanding on my part...)

    upload_2020-2-13_20-47-42.png

    The blue horizontal line is the print 'floor' Mike - it's a bit of a cheat because I don't have access to the original CAD design, so cannot modify the original model - just manipulate how it's printed via the print parameters...such as scale (as suggested by Ralph) & position.

    Anyway, that's enough 'Cow' for me tonight, the Grandchildren are here over the weekend so I urgently need to clear all my things away from small (curious) fingers... :)

    IanT
     
  11. adrian

    adrian Flying Squad

    No!!! Keep it out and print off a few more to keep them entertained. It's all the rage to create decorated sculptures, we had a great time in Bristol with the Gromit trail, the kids loved it.

    Screenshot 2020-02-13 at 22.02.38.png
    from The Cow Parade in Prague - Bovine Beauties Fill the City!
     
  12. Mike W

    Mike W Western Thunderer

    One of our concrete cows in Milton Keynes went on a 12 month world tour a few years back. The world has gone mad!

    Mike
     
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  13. Rob R

    Rob R Western Thunderer

    Best uk price I could find for the Prieser cows on the www was £14 - each (ouch!).
    A hollow 3d print may well be the best option.

    Rob
     
  14. simond

    simond Western Thunderer

    Rob

    Or a 3DP mould so you can cast your own herd...

    Ian

    Please can you post a link to the CAD - I might be able to “adopt adapt & improve”!

    atb
    Simon
     
  15. Ian_T

    Ian_T Active Member

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  16. Mike W

    Mike W Western Thunderer

    I thought about casting my own in resin, but I am at the simple flat-backed mould stage and think a cow with lumps and bumps, horns, legs etc would be a step too far for my skills at this stage. But if solid printed in two halves I might manage that OK.

    Mike
     
  17. Rob R

    Rob R Western Thunderer

    Slaters have injection moulded their beasts in various scales in 2 halves for years.

    Rob
     
  18. markjj

    markjj Western Thunderer

    Schleich do a range of farm animals which are meant to be around G-scale or 1:24 if it's any help.
    You can find them in most Smyths toyshops or other good toyshops.
    Link to the range below
    Discover the new Schleich® products
     
  19. Mike W

    Mike W Western Thunderer

    Thanks Markjj but I've tried them and they are much too big.

    Best bet so far seems to be solidprint, or buy an expensive one, cut in half and cast at home. these are NOT for sale of course, just for my own use.

    Mike
     
  20. Jon Nazareth

    Jon Nazareth Western Thunderer

    Mike
    You could always buy say G1 cows and paint them to look like Black Dexters which are a smaller breed of cattle anyway. They aren't all black either, some are brown.

    Jon
     
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