3D Printing?

Discussion in 'Modelling' started by von Poop, Nov 26, 2021.

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  1. von Poop

    von Poop Adaministrator Admin

    I can only imagine kit manufacturers are looking slightly nervously at 3D print world...
     
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  2. SteveDee

    SteveDee Well-Known Member

    OK von Poop, let's see how good you are.

    You should be able to print one of these...
    printinplace_kaleidocycle_2.jpg
    ...that you can then turn inside out, i.e. all joints should move freely!

    Here is the link: Print-in-Place Kaleidocycle by ecoiras
     
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  3. von Poop

    von Poop Adaministrator Admin

    Funny you should mention that.
    Just been browsing in-place mobile sort of things.
    Will get around to them.
    (Saved to collection 'Daft'.)

    Most complex thing so far is probably a dust extractor for a Bosch multicutter. Lots of tubes and clips. All rather satisfying... once you've hacked the bastard supports from where you shouldn't have allowed them to form.

    TPU supports are my favourite. Very satisfying, and a free fidget toy after removal.
     
  4. SteveDee

    SteveDee Well-Known Member

    This is a fun thing to make as it consists of 5 parts that you have to assemble: Squishy Turtle by jakejake

    Turtles.png

    The grand children like these turtles as they have clever springy legs.


    However, I find these goddam Monkeyz impossible to print successfully: Monkeyz by muzz64
     
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  5. von Poop

    von Poop Adaministrator Admin

    Back to WW2.
    Becoming a tad obsessed with Lithopanes. (My old dear showed me a turn of the previous century China one she'd bought last year. Quite mad.)
    One of my favourite images. IWM B9538
    "A Sherman tank crew, smoking a variety of pipes, awaits the order to advance near Argentan, 21 August 1944."

    IMG_20220801_133108336_HDR.jpg

    IMG_20220801_133213589_HDR.jpg

    Whether it was worth 16 or so hours of print time, I don't know, but I suppose I like it so that's that.
     
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  6. von Poop

    von Poop Adaministrator Admin

    Three exceptionally simple things now made completely from scratch.
    Something for the Teacher in the house - no idea, but she seems very pleased, a bushing to repair the trolley I move my work tools about with while waiting for correct bearings, and some risers for a fridge-related issue in TPU. (TPU's gone well, except for the crazy slowness required.)

    whole.jpg bushing.jpg puck.jpg

    Softly softly, but it's starting to make sense. 3D Modelling as much about extraction as creating basic shapes. They open from TinkerCad in Fusion, but still can't make head or tail of that.
    Might try solidworks as a mate that works with CNC Plasma & Laser cutters says it's easy to grasp.

    I've made little truly frivolous since learning the machine. Focus has been on repairing & storing things.
    Might be time to do a 1/76th Churchill.

    (Oh, and Amazon has a lot of Filament offers on at the mo. Might try some PETG for more durable outside stuff.)
     
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  7. CL1

    CL1 116th LAA and 92nd (Loyals) LAA,Royal Artillery

    Adam I am glad you are sticking with this.However trying to understand the terminology you state does remind me of school days trying to understand the meaning of algebra and associated different math type events.Sadly I never got it and for me to go 3D printing would be a disaster waiting to happen.

    I think you should go for the Churchill (perhaps when I see that I will manage to gain my bearings)
     
  8. von Poop

    von Poop Adaministrator Admin

    Same as anything, Clive.
    Most normal people don't recognise what a 76mm HVSS is, or can quote Churchill's front plate thickness uninvited (The fools!).
    You learn the language quite fast with anything new, and there's a metric shit ton of 3D nonsense acronyms you rapidly grasp.

    Or sort of grasp... Then don't understand at all... Until you actually encounter them in practice.

    Churchill might be the next print after I finish a run of plastic razor blade holders (Who knew they were a thing... recommended if you have stickers to deal with. Remarkable.)
    Annoyingly, I may try and do a Tigger from scratch after that. It's just such a simple shape... sigh.
     
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  9. Trackfrower

    Trackfrower Member

    I know nothing of these strange machines, but as of being of a certain age, I can't think of anything I want for Christmas.
    Where do you start with a 3 D printer?
    I could print wargames stuff and model railway stuff maybe even a replica gun.
     
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  10. von Poop

    von Poop Adaministrator Admin

    Bearing in mind I'm new to this so I may be talking cack, but if I were a wargamer I'd be looking at resin printers.
    Two types (well, lots of types, but two consumer) :
    FDM - the most common - we use plastic string to lay down things.
    Resin - uses a liquid pool and laser beams to set the gloop. Seems to be easier to get smoother results, but again, I've never used one. (Though... been looking. :unsure:)

    For scenery etc. yeah, deffo either.

    I bought this, which seems to have all the bells & whistles I'd have inevitably bought anyway by now.
    Started not having a scooby what I was doing, but now getting quite nice results/constantly chunking out parts & widgets.:
    Ender-3 S1 3D Printer

    Starting. Maybe have a search on Thingiverse, Printables etc. to see if someone's already designed things you might fancy making.

    Thingiverse - Digital Designs for Physical Objects
    Printables

    I mean... 'Wargaming' on Thingiverse. (Horrible website, but the biggest.)
    Search Thingiverse - Thingiverse
     
  11. von Poop

    von Poop Adaministrator Admin

  12. CL1

    CL1 116th LAA and 92nd (Loyals) LAA,Royal Artillery

    Oh Gosh
    I think I need to gen up a bit more

    [​IMG]
     
  13. Slipdigit

    Slipdigit Old Hickory Recon

  14. von Poop

    von Poop Adaministrator Admin

    I paid about £300, and the priciest part I've seen is a motherboard for about £40. Think the marketing/tech is moving quite quickly. C.£230 would get you a very basic machine for most of last year.
    Strange quite robust things. Very strong extruded Ali frame. Sort of intrigued what'll go first. Guessing steppers won't last forever, but they're about £25 each.
     
  15. RAFCommands

    RAFCommands Senior Member

    Over the years - the most common part I've replaced is the hot end - not because the nozzle wears out but because cables break in flexing causing either runaway or stone cold - result is the same easier to replace than try to unblock solid melt zone.

    Now running E3D Revo 6 found it much easier to clear and heater/thermistor much less prone to failure but still have spare 0.4 nozzle on hand.

    Second most common failure for me was the motherboard plug socket for the heated bed burning out - movement of cables eases out the plug and socket over time and soon you get arcing with contact burnout. Most manufacturers use a component rated for the operating current and it cannot handle the arcing current.

    After many years use my linear bearings cut a groove in the rods so when I do an annual service/upgrade I rotate the rods/clean off particles and apply light lub.

    The machines are mostly open source so it's easy to buy replacement parts and swap out - the hobby engineers will also be doing regular "improvements" to the manufacturers design and mods are rife when a machine has been running a few months.

    Ross
     
  16. von Poop

    von Poop Adaministrator Admin

    As soon as I worked out how the hot end functioned I ordered a spare. That's a lot of stresses on a small part.
    Well, an uprated spare. I am male after all.
    Fitted a bar light to it, which has been very good, and the apparently traditional camera to keep an eye on things
    Thinking I may print every spare I can find so at least they're to hand if needed.

    Fascinating things.
    Forcing a new way of looking at repair/making.
    Already printed a few things I probably should have just made from wood. :unsure:
     
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  17. RAFCommands

    RAFCommands Senior Member

    I did the print out part set for my first machine - on the assumption that if any part failed I could not "print on demand" - and a ready to go replacement would get me away in a few hours.

    Then the slippy slope begins - you look at the box of bits, what you have as bought spares and bits replaced during that last hobbist improvement - a decide to order from Aliexpress the remaining hardware coz it's just less than 100 to 80 notes.

    You reason build a spare machine - keeps the parts together and instead of a few hours on breakdown its just a flick of a switch to get back into printing!

    Soon your son is sleeping in a tent in the garden when he comes home at the holidays and that emergency spare machine is dedicated to printing flexible filament or nylon coz its easier to keep one with the settings for that material dialled in and you are considering building another spare machine!

    R
     
  18. von Poop

    von Poop Adaministrator Admin

    What do you chaps use to lubricate shafts/steppers?
    I've a selection of dry/PTFE lubricants, but it's all so new I'm cautious.
    Liquid/dropper, spray?
    Just wondering in case there's some knowledge about what's gone wrong/is good?
     
  19. RAFCommands

    RAFCommands Senior Member

    Superlube 210xx the ptfe loaded gel stuff for almost everything - spot on rod then lint free cloth to spread, run bearings up and down and wipe away excess..

    Failing that light lithium but very sparingly and periodically wipe between prints to get rid of any abrasive dust (especially if printed with augmented filament eg conductive/carbon etc.

    Anything sticky residue or heavy such as greases/wd40 etc is to be avoided.

    Silicone is to be avoided and if sprayed can discolour/weaken plastic parts.

    Usually about 12 months between lubrication.

    R
     
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  20. von Poop

    von Poop Adaministrator Admin

    The sheer bloody-minded determination when something refuses to print is funny.
    And the related learning process rather interesting.
    Doing one of those 'impossible ball' things for a mate's little girl (Five-year-old minds fairly easily blown). Fourth attempt with an intransigent gloss PLA that doesn't like supports, which is leading to far more detailed examination of wall thicknesses & varying infills.

    It's still bollocks when people say this stuff is already user-friendly (though seemingly a damn sight more than it was a few years ago), but I'm sort of glad it's not, as there's a benefit to being forced to think a bit harder.

    IMG_20220926_155909032.jpg
     
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