Jump to content

Nasty prints


Noambeau

Recommended Posts

Posted (edited) · Nasty prints

Hello, I have been printing some small objects recently and I have encountered some stringing and bad prints. I'm thinking it has to do something to do with my Cura settings. I have added my settings and pictures of the prints below.  Is there an optimal setting for small prints?  Also, any general tips to improve my print settings would also be appreciated. Thank you! 

I'm printing with the monoprice select mini  with PLA, my Cura settings are:

 

Quality:

Layer Height: 0.1mm

Initial Layer Height: 0.3mm

Line width: 0.4mm

 

Shell:

Wall Thickness: 0.8

Top/Bottom thickness: 0.8

 

Infill:

Infill density: 20%

Infill pattern: Grid 

Gradual Infill Steps: 0

Infill before walls: yes 

 

Material:

Printing temperature: 195 C

Build plate temperature: 60 C

Diameter: 1.75mm

Flow: 100%

Enable retraction: yes 

Retraction distance: 1.75 mm

Retraction speed: 25 mm/s

Retraction Minimum Travel: 0.8

 

Speed:

Print speed: 40 mm/s

Infill speed: 40 mm/s

Outer wall speed: 25 mm/s

Inner wall speed: 40 mm/s

Top/bottom speed: 20 mm/s

Travel speed: 75 mm/s

Initial layer speed: 20 mm/s 

Initial layer print speed: 20 mm/s

Initial layer travel speed: 37.5 mm/s 

 

Cooling: 

Enable print cooling: yes

Fan speed: 100%

Minimum layer time: 10s 

 

Mesh fixes: 

Maximum resolution: 0.01

 

Special modes:

Print sequence: all at once 

 

 

 

 

DSC_8656.JPG

DSC_8659.JPG

DSC_8661.JPG

Edited by Noambeau
Wanted to be more elaborate
  • Like 1
Link to post
Share on other sites

Posted (edited) · Nasty prints

I would say that I would go back to the default and just dial back the temp a bit more than you have. Also, that is some really teeny weeny parts to be printing. The only time I have gotten anything decent at that scale is to actually tell my nozzle to go to a very thin line width with wall counts/thickenss being a direct multiple of the nozzle width. I am assuming you are using PVA as well to support these prints?

 

Edit: I would also look at @Gigi's recent threads on tiny prints. @Gigi is rockin' it on the teeny stuff. I also believe he is using a 0,.25mm nozzle which really makes a difference.

Edited by kmanstudios
  • Thanks 1
Link to post
Share on other sites

Posted · Nasty prints

What printer is this ? (Not an Ultimaker i guess).

 

To avoid (or reduce) stringing:

 

Adjust retraction settings (relieves pressure in the nozzle)

Lower temperature (lowers oozing)

Increase travel speed (lowers travel time, thus lowers nozzle pressure, thus lowers oozing)

 

  • Thanks 1
Link to post
Share on other sites

Posted · Nasty prints
5 minutes ago, DidierKlein said:

The travel speed is the speed when the head is doing non-printing moves so it's particularly important when going from an island to another (where stringing appears generally)

That made it clear. I did not have a good working definition of travel speed in me wee head. Thanks!!

  • Like 1
Link to post
Share on other sites

Posted (edited) · Nasty prints

If I had to print this on my UM2 in PLA, I would try 20...25mm/s, and 180...185°C first. And then watch what happens and adjust on the fly as required. The slow speed is to get as little nozzle pressure as possible, thus even flow and less leaks during travel, and the low temp to improve cooling and reduce stringing as much as possible. And of course I would print a dummy model next to it, so the nozzle has more cooling time, to avoid heat-deformation.

 

DSCN5603b.thumb.jpg.83c20560cfab90d56590243bc6015f12.jpg

Less heat deformation with a dummy (square tower) next to the real testmodels (cones). Numbers are cm, little lines are mm. The cones are 20mm diameter x 20mm high; the blocks are 10mm x 10mm wide, and higher than the cones.

 

dummy_inverse_block6.thumb.jpg.2bdb2396588983363b48127ee12d8174.jpg

Tips for dummies. :)

 

dummy_cutout2.thumb.jpg.750722bab5fa1c22a5e38d2a5717ab5b.jpg

Example of real dummy and part of real model.

 

 

krabber1b.jpg

Another dummy in a real print.

 

 

Edited by geert_2
  • Like 2
  • Thanks 1
Link to post
Share on other sites

Posted · Nasty prints

In your settings it says that the material diameter is 1.75mm ... is it a modified Ultimaker?

 

Which one is it? Ultimaker 2+ / Ultimaker 3 or Ultimaker original / +

 

On Ultimakers travel speed can go up to 250mm/s

  • Like 1
Link to post
Share on other sites

Posted · Nasty prints
3 hours ago, DidierKlein said:

What printer is this ? (Not an Ultimaker i guess).

 

To avoid (or reduce) stringing:

 

Adjust retraction settings (relieves pressure in the nozzle)

Lower temperature (lowers oozing)

Increase travel speed (lowers travel time, thus lowers nozzle pressure, thus lowers oozing)

 

I'm using the monoprice with pla,thanks for you tips I'll try it out :)

  • Link to post
    Share on other sites

    Posted · Nasty prints
    13 minutes ago, DidierKlein said:

    In your settings it says that the material diameter is 1.75mm ... is it a modified Ultimaker?

     

    Which one is it? Ultimaker 2+ / Ultimaker 3 or Ultimaker original / +

     

    On Ultimakers travel speed can go up to 250mm/s

    Sorry I wasn't clear, I'm the monoprice mini 

  • Link to post
    Share on other sites

    Posted · Nasty prints
    14 minutes ago, geert_2 said:

    If I had to print this on my UM2 in PLA, I would try 20...25mm/s, and 180...185°C first. And then watch what happens and adjust on the fly as required. The slow speed is to get as little nozzle pressure as possible, thus even flow and less leaks during travel, and the low temp to improve cooling and reduce stringing as much as possible. And of course I would print a dummy model next to it, so the nozzle has more cooling time, to avoid heat-deformation.

     

    DSCN5603b.thumb.jpg.83c20560cfab90d56590243bc6015f12.jpg

    Less heat deformation with a dummy (square tower) next to the real testmodels (cones). Numbers are cm, little lines are mm. The cones are 20mm diameter x 20mm high; the blocks are 10mm x 10mm wide, and higher than the cones.

     

    dummy_inverse_block6.thumb.jpg.2bdb2396588983363b48127ee12d8174.jpg

    Tips for dummies. :)

     

    dummy_cutout2.thumb.jpg.750722bab5fa1c22a5e38d2a5717ab5b.jpg

    Example of real dummy and part of real model.

     

     

    krabber1b.jpg

    Another dummy in a real print.

     

     

    Thank you I'm printing this on my monoprice select mini. I will definitely be trying this method thank you! 

  • Link to post
    Share on other sites

    Posted · Nasty prints
    3 hours ago, kmanstudios said:

    I would say that I would go back to the default and just dial back the temp a bit more than you have. Also, that is some really teeny weeny parts to be printing. The only time I have gotten anything decent at that scale is to actually tell my nozzle to go to a very thin line width with wall counts/thickenss being a direct multiple of the nozzle width. I am assuming you are using PVA as well to support these prints?

     

    Edit: I would also look at @Gigi's recent threads on tiny prints. @Gigi is rockin' it on the teeny stuff. I also believe he is using a 0,.25mm nozzle which really makes a difference.

    Thanks I'll try that. I know there small but I want to be printing some jewelry peices so these prints were some test prints. I'll check out the thread you mentioned. Thank you! 

  • Link to post
    Share on other sites

    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now
    • Our picks

      • Introducing Universal Cura Projects in the UltiMaker Cura 5.7 beta
        Strap in for the first Cura release of 2024! This 5.7 beta release brings new material profiles as well as cloud printing for Method series printers, and introduces a powerful new way of sharing print settings using printer-agnostic project files! Also, if you want to download the cute dinosaur card holder featured below, it was specially designed for this release and can be found on Thingiverse! 
          • Like
        • 10 replies
      • S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
        (Sorry, was out of office when this released)

        This update is for...
        All UltiMaker S series  
        New features
         
        Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
          • Like
        • 0 replies
    ×
    ×
    • Create New...