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Yet another bed replacement.

Discussion in 'Projects' started by mark tomlinson, Apr 6, 2017.

  1. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    OK, the bed plate arrived today... I have a sneaky suspicion that this was a case of the eyes being larger than the belly :)

    1/4" plate 24" long is awesome, but a little heavy. Will it work with the stock stepper? Probably if I slow it down enough.

    I may just go for a really beefy stepper to replace that Y axis one ... get enough torque and it will move along. I'll post some pics after we get started deconstructing.
     
  2. daniel871

    daniel871 Well-Known Member

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    Maybe one of these bad boys?

    http://www.omc-stepperonline.com/ge...ma-17-stepper-motor-17hs130404spg5-p-140.html
     
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  3. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Not a bad idea! I have some spares for the delta that are like 80nm or 90 nm, but those are a lot better.
    Thanks.

    edit: 411.43 steps / mm for that motor. just to doc it here.

    I will try the stock one first, just because...
     
    #23 mark tomlinson, Apr 17, 2017
    Last edited: Apr 17, 2017
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  4. SPyKER

    SPyKER Active Member

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    Before you install it, would you throw it on a scale? I'm curious.
     
  5. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Sure, 5.5 pounds :)
     
  6. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Since it will be using linear rails and bearings I suspect it will move even on the stock one, but that will be harsh on them.
    Larger stepper will be required I suspect to keep it cool.
     
  7. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    #27 mark tomlinson, Apr 22, 2017
    Last edited: Apr 25, 2017
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  8. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Now to assemble it and sort out how fast we can actually move that thing.
     
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  9. KTMDirtFace

    KTMDirtFace Well-Known Member

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    What are you going to do for Bed heat?

    My aluminum bed is working great but so far im priting PLA on blue tape and no bed heater. I still haven't got around to installing my heater.
     
  10. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    well initially I will "do without" :)

    I have my eye on a couple of 110v AC 600w units (I would need two given the size*) but for the initial phase, just a stone cold bed.


    *I mean the physical dimensions
     
  11. KTMDirtFace

    KTMDirtFace Well-Known Member

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    I think i'm just going to run no bed heater also. I have a 110 350W and SSR here.. but

    All I print is PETG and occasionally PLA neither of witch seem to need a bed heater especially on Fleks plate.
     
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  12. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    There are so many materials that don't need a bed.
    That is why I am not investing the extra $$ initially either.

    I will eventually add them, but the cost of a custom sized one is still $40-60 and two smaller standard sized ones are a little bit more.
    Not worth it at this point.

    I may experiment with the various adhesion boosters/plates/bed coatings as well.
     
    #32 mark tomlinson, Apr 24, 2017
    Last edited: Apr 25, 2017
  13. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    That motor is 1/2 again as tall as the stock ones (when you account for the gearbox) but we will sort that out :)
    A word of warning it will probably be early June before we get heavy into this (parts are slow to arrive and May is a busy month for personal reasons)
     

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