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what happens below .1

Discussion in 'Off Topic' started by k1e1v1i1n, Jan 21, 2015.

  1. k1e1v1i1n

    k1e1v1i1n Active Member

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    what would happen if I set my layer height to .05 would it just ignore it or would the printer be confused?
     
  2. Mike Glass

    Mike Glass Active Member

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    I think your extrusion would be very low is all.
     
  3. k1e1v1i1n

    k1e1v1i1n Active Member

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    Just wondering if it will actually produce a .05 print. It's printing right now but I don't really have any way to measure the results.
     
  4. Mike Glass

    Mike Glass Active Member

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    I think its a limitation of the screw rods an stepper motors that only allow for true .1 resolution.
     
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  5. k1e1v1i1n

    k1e1v1i1n Active Member

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    Ended up not liking overhangs at all, but the tops looked amazing. corners are super sharp and 20% infill looks "ok"

    Of course the pics tell a lot more of the story then my eyes. in my hand it looks amazing in the pics its just ok .
     

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  6. Mike Kelly

    Mike Kelly Volunteer

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    Usually a smaller layer is better for overhangs but worse for bridging.

    The theoretical minlayer height is 1 step, aka 1/2560mm

    The whole 100micron layer height is more a good idea than a rule. Our @tesseract printed at 10 microns before.
     
    #6 Mike Kelly, Jan 21, 2015
    Last edited by a moderator: Jan 21, 2015
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  7. k1e1v1i1n

    k1e1v1i1n Active Member

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    That is when I was trying to say sorry. Bridging.
     
  8. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    I was looking for that thread/those pictures. Those were some tiny, tiny prints :)

    Yea, he did the most experimentation with small prints...
     
  9. Ziggy

    Ziggy Moderator
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    If you ignore the nozzle diameter, the theoretical layer minimum limit is in the slicer and marlin. eg Slic3r and Cura have 3 decimal points of precision. Then some precision can also be lost through Marlin as the floating point library only handles 6-7 decimal digits.

    So there is no one answer for the minimum layer size. It depends on which slicer your use and the size of the model.
     
  10. k1e1v1i1n

    k1e1v1i1n Active Member

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    A lot of good info. So why are printer manufacturers selling there best resolution as 100 microns then? ( I know there is some selling higher) I mean just because I can do higher dose not mean I will. I use .3 all the time. but its nice to know what you can do. and if there is time try super high resolutions from time to time. maybe its less reliable at those resolutions?
     
  11. Mike Kelly

    Mike Kelly Volunteer

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    Mostly the linear time increase. A 10 micron print will take 10x as long as a 100micron print without providing 10x as much quality.

    It's also kinda a standardized comparison number which really doesn't mean anything. XY resolution is far more telling. But that's mostly a function of nozzle diameter
     
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  12. Ziggy

    Ziggy Moderator
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    Taking the nozzle size, mechanical limits and slicer and firmware limits into account 0.1mm is a reasonable practical figure. Generally I find that 0.2mm is fine for most things.
     
  13. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    +1

    It goes a lot slower the smaller you go (more so if you want decent quality).
     
  14. Bill Monroe

    Bill Monroe Member

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    you could use Simplify3D's feature to change the layer height or whatever it takes to make a decent bridge, then go back when the bridge is done..
    If you were OCD about that kind of thing.. and didnt have a life.. :)
    or..
    Make a 2 nozzle machine and run PVA support material in the other one... Which is my plan..
    Cuz, I have a life (although it's hard to tell, I know)
     
  15. k1e1v1i1n

    k1e1v1i1n Active Member

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    I like making statues right now so the finer the better I might fool around with .075 or .05 but I need some new filament cause the RoBo glow in the dark stuff is not great for detail work. it seems gritty.
     
  16. Montravont

    Montravont Active Member

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    These parts were all printed with a .1mm layer height. The only difference between the parts is that one barrel was printed with a .4mm nozzle and the other with a .25mm nozzle. Being able to print at smaller layer heights is great, but if you're just going for detail, I'd look into a smaller nozzle. It makes a world of difference.

    2 Barrels 1 Chest.jpg

    This second picture is just for scale.
    Chest w-Penny.jpg
     
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  17. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    I agree. Lowering the nozzle size is key.
    As a general rule of thumb the layer height should be no more than 80% of nozzle diameter.
     
  18. k1e1v1i1n

    k1e1v1i1n Active Member

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    Can I have the file for a barrel. I would like to see what I can do with it.
     
  19. Printed Solid

    Printed Solid Volunteer Admin
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    I'm with Ziggy. I used to do a lot of printing at 100 micron, sometimes going down to 50, and rarely over 200. Now I try most prints at 200 first, sometimes going to even thicker layers if there is not much geometry. When you go to lower layer heights, acceleration effects become more pronounced, so you have a smoother surface, but not necessarily a better looking print.
     
  20. Montravont

    Montravont Active Member

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    k1e1v1i1n, I've attached the STL for the barrel I printed.
     

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