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prototyping the worst printer ever (?)

Discussion in 'Projects' started by janot928, Sep 22, 2015.

  1. janot928

    janot928 Active Member

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    Hi everyone,

    I`ve been having my robo3d for about a year now and what have i done with it .... well almost nothing :p some random print here and there etc.

    But now i`ve launched myself into quite a big project: You´ve guessed it, i´m bulding my own printer from scratch.

    the goals:
    - as cheap as possible (especially for the electronic part)
    -print as many part as possible (almost everything)
    -pla only (due to cost saving and if i whant to print exotic filaments i still have my robo)
    -and of course design everything by myself (sorry for those who wish to help on that part but i really whant this to be MY printer)

    the steps of fabrication will be :
    -Repairing my Robo/finishing the CAD model
    -make some test print for the tolerances
    -make some strengh test (at differents temperatures and with different filaments and print settings)
    -print all of the parts and buy the rest
    -finaly assembling it
    -Cry for an hour because of some problem
    -making the software part


    This will be a long run project, i have no idea of how long it will actually take to finish it but i`ll try to give you guys some updates at each steps




    First of: What do you think would be the best type of plastic. It has to be stiff
     
    #1 janot928, Sep 22, 2015
    Last edited: Oct 5, 2015
  2. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
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    You will either need to buy bearings/bushings or if you print them yourself, something like Nylon filament would be the best choice. It will make an incredibly strong and slippery part. There may be no way around this as some things have to rotate and/or move linearly.

    It does up the cost, but other alternatives will not last as long or provide too much stiction to move smoothly.
     
  3. daniel871

    daniel871 Well-Known Member

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    Wouldn't this just be the MPCNC project with the 3d printer head mount?
     
  4. janot928

    janot928 Active Member

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    it`s all int the tittle :p. I will try out without any bearings but if needed i do have a few linear bearings... i will just have to redo the axis

    i`m glad i´ve already order some nylon for an other small project
     
  5. janot928

    janot928 Active Member

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    [​IMG]
    so far i`ve almost finished with the X Y axis i still have to add the limit switch and the extruder mount
     
  6. janot928

    janot928 Active Member

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    well i'm almost done with the XY axis (the photo above is outdated now) with radial bearings and smooth roads. Just have to do the Z axis.

    I've tried some nylon filament: except the fact that there is a lot of water, thus making almost impossible to print with it, it is indeed very Strong but maybe a bit too flexible. i might go with pla for the first try since I've got a lot of that stuff.
     
  7. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Keep the nylon in a ziploc bag with desiccant.
     
  8. janot928

    janot928 Active Member

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    i did.... i might leave it overnight in the oven at 60-70c. the biggest problem is that i will not have the place to have a dry-box to really use it
    :/

    ps 3d2 filaments aren't worth it at least for the nylon .p
     
  9. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Try Alloy 910. That is some really nice stuff.
     
  10. janot928

    janot928 Active Member

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    still going to get wet as does my nylon or not ?
     
  11. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Doesn't seem to matter with it. I let mine store in the open.
     
  12. janot928

    janot928 Active Member

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    i might try that for a later version. first i 'll have to do a 1/3 to see if i didn't forgot anything
     
  13. janot928

    janot928 Active Member

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    Well it has been a few day and i might be able to say that..... the machanical part is done :D
    I'll try to upload a few pictures later today.

    the print volume is about: 160*160*100 mm

    to do list:

    - prepare a spot for the arduino mega (or equivalent)
    - add a spot for the extruder motor
    -release all the stl and catpart/catproduct files if anyone is crazy enough to try it out
     
    #13 janot928, Oct 15, 2015
    Last edited: Oct 15, 2015
  14. janot928

    janot928 Active Member

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