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Unresolved Poor Corners

Discussion in 'Troubleshooting' started by Shaun, Oct 16, 2017.

  1. Shaun

    Shaun New Member

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    Hi All, since you guys where to helpful previously in my printing Woes im hoping you can help again.

    My print quality seems to be improving alot as time goes on, more likely due to the fact that im thinking more about the limitations of 3d printing during the drawing stage of 3d printing.

    However some of these limitations need to be resolved rather that avoided.

    the key one being at the moment is rather poor quality corners.

    ive attached a couple of examples (i do apologise as black doesnt show up great in pictures)

    but as you can see the corner definition is really poor.

    would anyone have any ideas what i can do to resolve this??
     

    Attached Files:

  2. Geof

    Geof Volunteer Moderator
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    looks over extruded a bit, maybe a little to hot. What settings and materials were used? We need as much information as you can give :D
     
  3. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Geof likes this.
  4. Shaun

    Shaun New Member

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    Hi Geof,

    Material is ABS
    Temperature is 195c
    Bed is 85C on a Kapton Tape/PVA Glue combo (fan disabled for the first layer)
    Speed
    Infill 50mm/s
    Inside Perimeters 45mm/s
    Outside Perimeters 45mm/s
    Extrusion was set to 1.1 (measured 100mm, extruded 100mm and calculated extrusion was under.)

    Retraction
    Length on move 3mm
    Speed 150mm
    Minimum Travel 3mm
     
  5. Geof

    Geof Volunteer Moderator
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    Are you certain the material is ABS? 195 is entirely to cold
     
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  6. Shaun

    Shaun New Member

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    yep defiantly ABS, printing temp on label states 210-260c on the label.. I did start at 260 and gradually decreased as i was getting an issue with edges curling on (upper edges not the base) and i believe this was due to the print not cooling enough between layers
     
  7. Geof

    Geof Volunteer Moderator
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    ABS needs no part cooling (fans off)
    Printing at 195 may be your issue. Try more like 230-245, fans off. And as @mark tomlinson stated dropping the acceleration numbers will likely help in finish quality but you will have slightly longer print times
     
  8. Shaun

    Shaun New Member

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    Thanks @Geof, im just reading through @mark tomlinson 's link.

    My thoughts where the cornering speed which Mark link seems to cover,, (Jerk setting)

    I'll up the temperature back to the range you stated, hopefully the curling edges wont rear its ugly head again.

    Ill let you know how i get on.

    thanks to both for your guidance.
     
  9. Geof

    Geof Volunteer Moderator
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    perfect. And double check that its ABS :D it should really be giving crazy hard times if your extruding at 195 unless that ABS isn't really ABS :D
     
  10. Kilrah

    Kilrah Well-Known Member

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    For that the real solution is not to use ABS :D
     
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