Jump to content
Ultimaker Community of 3D Printing Experts

Print bed lowers too early!

Recommended Posts


I have just received my Ultimaker 2! Yay!

I followed all the setup instructions, and it seems to be printing perfectly.. until the last two layers. It printed every layer perfectly until the last two layers, at which point it lowered the bed about 5-10mm and started printing in mid air.

I haven't had a chance to inspect the gcode yet, but I find it odd that the sample file "double_heart_veronoi.gcode" is in some way faulty if UM are sending it out with new machines!

The other odd thing that happened, was when the print finished, the bed lowered to the bottom of the machine (as you would expect), but it stopped half way down and spluttered a little (as if it had got stuck). It all happened too quickly to see if the belts were jumping or the motors were skipping steps etc..

I've had a search and can't find anything that relates to these same problems (although I am new to this forum, so apologies if this is a duplicated thread). Any help would be greatly appreciated!


Share this post

Link to post
Share on other sites


I was asked to downgrade the firmware on my UM2 to 14.12.1 which I did. It seemed to fix the problem and I didn't see any problems on subsequent prints.

However, during a print, I acknowledged a sound that had been happening since I first started using the UM2 (I just hadn't got around to checking it out). It was a knocking/clicking sound, as if the print head was hitting something. On investigation it turned out to be the bed lead-screw (threaded rod) turning slightly, then releasing (this occurred mid layer, it wasn't moving to a new layer). Once I had found this was making the noise, I decided to place a light rotational force on the lead-screw with my fingers. As expected, the bed stayed still due to the holding torque of the motor, however, when the noise occurred, it released the holding torque and the bed lowered!!! I expect this was the problem all along, and that firmware version 14.12.1 has somehow improved the issue, but not resolved it. If anyone has seen anything like this, please let me know.

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

    • Architect Design Contest | People
      The goal of this contest is to design a set of people figurines that could be used in such a project to make an area, office or mall seem populated. 
      Think of different types of people in different environments, like walking people, people standing still, working people, and both men and women.
      • 31 replies
    • Taking Advantage of DfAM
      This is a statement that’s often made about AM/3DP. I'll focus on the way DfAM can take advantage of some of the unique capabilities that AM and 3DP have to offer. I personally think that the use of AM/3DP for light-weighting is one of it’s most exciting possibilities and one that could play a key part in the sustainability of design and manufacturing in the future.
        • Like
      • 3 replies

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!