Jump to content
Sign in to follow this  
tachyio

What's the best that Ultimaker can do?

Recommended Posts

Posted · What's the best that Ultimaker can do?

Hi Guys,

I've tweaked and tweaked, but I can't seem to get quality past this...

1.jpg

2.jpg

EDIT: My web server is not allowing hot linking of pictures, so here's a html page with the 2 jpegs:

http://radiusdev.com/tachyio/um/ultimaker.html

When you look at the profile of the printed model, the surface looks really smooth. Yet when you look at the model directly under bright lights, you can see this undulating pattern. My guess is that the printer wobbles as it prints, or that the x-y accuracy is rather poor. Also I still have problems with printing overhangs...

I currently used netfabb to print this model, using standard quality PLA material settings, at 0.15mm layer height and 300mm/sec jump speed to reduce stringing. But I don't understand, despite this teeny teeny layer height, I can still see the layers! :(

Additional info: Marlin firmware flashed from replicatorg 26, temperature was 185C to 200C...My extruder head jams often as well, every 2 prints...balanced the peek and bowen many many times. I am just thinking to myself that Ultimaker should have designed a snap-in-place extruder head...so every time it jams, we snap the old one out for cleaning and snap a new one in for the next print - kinda like the old days where standard 2d printers kept getting their heads clogged.

Sigh, any help would be much appreciated...If this is the best the Ultimaker can do, it leaves me wondering how the promotional pictures look so good...

Share this post


Link to post
Share on other sites
Posted · What's the best that Ultimaker can do?

The promo pictures look so good because they print at 25mm/s, 0.05mm per layer, and around 200-220C. Also using belt tensioners will help too :)

Dont expect to get a good print in the first run, I usually mess up 2-3 prints before I got a good one. Its all in the first layer...

Share this post


Link to post
Share on other sites
Posted · What's the best that Ultimaker can do?

If you have extruder issues with jamming, try calibrating the filament thickness and steps per E very carefully: too much extruded material will cause a pressure buildup in the bowden tube and the extruder will slip and strip the filament, causing a jam.

Slower printing allows for a bit of extra plastic to push through during infills, and an alternative is to get a new feeder. I got the one by Ghagen which grips the filament so well that the motor skips steps without skipping; this lowers the pressure in the bowden tube and does not jam.

The wobbling can be caused by slack belts (backlash) or dynamics problems where you make steps so fast that you get overshoots (and corrections). Printing slower always works.

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.

Sign in to follow this  

  • 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!