Jump to content
Ultimaker Community of 3D Printing Experts

Extrusion is different between usb and sd card


Recommended Posts

Posted · Extrusion is different between usb and sd card

Hello,

 

I'm going to try my best to explain what is going on with my printer. I have a 2 Extended+ that I keep fiddling the bed on. Sometimes I think I'm too close and plastic doesn't come out, then I move it up and it comes out real thin and stringy. I tend to use Simply3D but have since moved back to Cura as I like the ease of first layer settings based in mm. I hate how Simply uses percentages.

 

Anyway, I loaded a model in the latest Cura and sliced it. While printing off the sd card the first layer lines come out thin and wiry and I can easily push it off the glass. To make changing settings quicker I decided to connect via usb so I can change settings and whatnot. Using the same settings as the original model, the first layer lines now go from looking super underextruded to being over extruded. It sticks really well to the glass and the lines come out thick and heavy.

 

What is going on? The printer is at work so I don't have pictures of both tests. The model was a simple zig zag to test bed level.

 

A few notes on the printer. I upgraded the extruder to the Bondtech QR from Matterhackers Here.

 

To change the esteps easily I changed the original firmware to the tynkergnome firmware. What I've been thinking is to go back to the original factory firmware from Cura and change the esteps using gcode.

 

What doesn't make sense to me is that it's been working really well since I installed it earlier in the year.

 

Anyone have any idea why printing over usb is so different than printing off the sd card?

 

Thank you,

Nicholas

 

  • Share this post


    Link to post
    Share on other sites
    Posted · Extrusion is different between usb and sd card
    11 hours ago, niacobelli said:

    Anyone have any idea why printing over usb is so different than printing off the sd card?

     

    Hi Nicholas,

     

    i can imagine three possible reasons:

    • the used gcode files are different
    • you try to print via USB with gcode flavor "Ultimaker" (instead of "Marlin")
    • some tools for USB-printing add their own start scripts / commands

    Can you rule out these possibilities?

  • Share this post


    Link to post
    Share on other sites
    Posted · Extrusion is different between usb and sd card

    Does Cura add different start up scripts over usb? I’ll change the gcode flavor to marlin. 

     

    Obviously there is a difference, but why choose marlin  gcode over Ultimaker 2 in Cura?

     

    Also, as an aside when I print from simply3d on sd and start a print it says it’s going to override settings and to select continue it cancel. When I select continue the screen moves over to cancel but still prints as usual. 

     

    When printing from sd from Cura no such question is asked from the printer. 

  • Share this post


    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

      • Talking additive | The 3D printing podcast
        Why should we be the only ones asking questions? Join us and ask Jabil all your questions on September 22nd 5pm CET
          • Like
        • 3 replies
      • Ultimaker masterclass: Optimizing your Ultimaker Cura workflow
        Save your seat for either broadcast on September 23.
        What will you learn?
        · Best practices for iterative print preparation and every lesson you should learn from each print
        · The right way to use per-object settings and when they are most useful
        · Easy-to-use resources for anyone who wants to develop their own printer definitions, plugins, or print profiles
        · How to optimize print profile settings and whether to “keep” or “discard” changes
        · When is the right time to export your drawing from CAD? (Based on Ultimaker Cura’s surprising power as 3D control software)
        · And a whole lot more tips and tricks!
         
        How can I join?
        This free masterclass will take place twice:
        1. 11am CEST (5pm SGT, 5am EDT)
        2. 5pm CEST (11am EDT, 8am PDT, 11pm SGT)
          • Like
        • 0 replies
      • Do you use 3D printing at work? Let us know
        It doesn't matter if you are using 1 Ultimaker or 10, there is inspiration in everything. We're looking for ...
        • 1 reply
    ×
    ×
    • Create New...