Jump to content
Ultimaker Community of 3D Printing Experts

Why is the printer doing this on the first layer? (pic)

Recommended Posts

First of all the difference is pretty small and I think most people wouldn't care.  I mean the final part should look fine, right?  Well maybe lower/tighten all 3 screws just 1/3 a rotation to get the bed a little farther from the nozzle.  But the final part should look fine I think.  Just because the bottom layer is a little thin doesn't mean the whole part is bad.


Anyway what is causing this is almost certainly glass that is not flat.  Ultimaker uses tempered glass (not certain why they do this) and tempered glass tends to be thicker/higher in the middle just like this.  You could just accept it like this or you could ask your reseller for another piece of glass.  But they are all like this to some degree.  Some glass plates are better than others.

Share this post

Link to post
Share on other sites

As @gr5 said, this is most certainly due to the glass not being perfectly flat. It seems to happen a lot, I guess UM should try and get better glasses from another supplier.

Anyway, you can try and call your supplier to have the glass exchanged, or, you could try to print on the other side of the glass. I bought a second glass bed, and the second one was less thick in the middle on one side than the other, so flipping it over solved my printing troubles.

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

    • How to 3D print with reinforced engineering materials
      Ultimaker is hosting a webinar where we explain how you can achieve and maintain a high print success rate using these new reinforced engineering materials. Learn from Ultimaker's Product Manager of Materials and top chemical engineer Bart van As how you can take your 3D printing to that next level.
      • 0 replies
    • "Back To The Future" using Generative Design & Investment Casting
      Designing for light-weight parts is becoming more important, and I’m a firm believer in the need to produce lighter weight, less over-engineered parts for the future. This is for sustainability reasons because we need to be using less raw materials and, in things like transportation, it impacts the energy usage of the product during it’s service life.
        • Like
      • 12 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!