Jump to content
jehamann

Cura causing filament to extrude before the hotend touches the build plate?

Recommended Posts

Posted · Cura causing filament to extrude before the hotend touches the build plate?

Im not sure why, but I am having a problem with the Cura software and my 3d printer. How do I know this is a problem with the Cura software? I noticed it was Cura and not my printer when I tried using a different 3d printing software called MatterControl from MatterHackers.

The problem I am noticing on Cura is that filament starts to extrude before the hotend has touched the build plate causing it to curl and then tangle with filament that is being printed for the first layer. Any help would be great!!!

5a331eb377859_Explorer1.thumb.jpg.a4f93596e2dc653d6318bec9e52c9d85.jpg

5a331eb377859_Explorer1.thumb.jpg.a4f93596e2dc653d6318bec9e52c9d85.jpg

Share this post


Link to post
Share on other sites
Posted · Cura causing filament to extrude before the hotend touches the build plate?

Hello !

I am only using cura since I start printing stuff and on all the different version I tried, Cura always start extruding filament before printing. I don't think this is actualy a bug.

Normaly, it extrude on the front left corner of the printer and after few centimeters extruded, it start printing. If your nozzle is very clean, the filament extruded should go smoothly on the build plate and form a kind of small circle.

If you start printing the object just after that (without skirt or brim) the filament can sometimes srcew a part of the first layer. It happens to me on very big first layer, it was almost as big as the buildplate of my um2 extended.

Here 2 pictures about what i said :

initial_extrusion.thumb.jpg.f4caf3b0ceb968e946e410abae2dd2a6.jpg

first_layer.thumb.jpg.8b9b997908fbefe94ddc60ba575cc6d4.jpg

On those two pictures you can see the initial extrusion, which is normal and on the second, the begining of the first layer of ultimaker robot gcode (with a skirt). This is actually some red pla. What material are you using ?

Normaly it is not a problem.

If you talk about somethink different than that, you should check you gcode or show it to someone who understand it well.

Good luck, hope it helps

initial_extrusion.thumb.jpg.f4caf3b0ceb968e946e410abae2dd2a6.jpg

first_layer.thumb.jpg.8b9b997908fbefe94ddc60ba575cc6d4.jpg

  • Like 1

Share this post


Link to post
Share on other sites
Posted · Cura causing filament to extrude before the hotend touches the build plate?

Hi,

Yes it's because you've got a kinda "purge" before print really starts.

But if you don't want it, yo can't just delete the GCODE instruction in Cura advanced toggle

purge.thumb.PNG.e35bfde5c3176492d8ffee3b44a02b78.PNG

purge.thumb.PNG.e35bfde5c3176492d8ffee3b44a02b78.PNG

  • Like 2

Share this post


Link to post
Share on other sites
Posted · Cura causing filament to extrude before the hotend touches the build plate?

Thanks for the info! Is there a good way to have mine extrude a line to the print, like the one in your picture?

Share this post


Link to post
Share on other sites
Posted · Cura causing filament to extrude before the hotend touches the build plate?

Well the diagonal line isn't really volunteer, it's just the filament who's falling down to the plate when the head moves to the print place

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Our picks

    • Ultimaker Cura 4.0 | Stable available!
      Ultimaker Cura 4.0 is mainly focused on the improved user interface and cloud integration.
      As always, we want to collect your user feedback for this release. If there are any improvements you can think of, feel free to mention it here and help us to shape the next release.
      • 98 replies
×
×
  • Create New...

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!