In the past several months, whether in the New Matter store, the MOD-t Printer Tool, or Cura, we’ve encountered reports from some MOD-t users who are intermittently experiencing an irritating issue known as “layer shifting” when attempting to print larger objects.  Layer shifting most often occurs when a print design is taller than 3 inches or is utilizing the full range of either the X, Y, or Z axes, though it can also sometimes occur on smaller print jobs as well. The resulting prints will appear as though the print tray has “shifted” out of position during the job, and may look something like this:

Postmodern art? Perhaps. Usable prints? Not so much.

After looking into the issue, our engineering team has concluded that this problem can be effectively addressed by attaching a small modification to your MOD-t’s print tray. This simple modification, which we’ve nicknamed “MOD-skis”, lock the build tray into position on the pinion rods that guide it and should mitigate, if not completely eliminate the layer shifting and skipping seen by some users. The best part is, this modification can actually be printed at home on your own MOD-t!

Figure 1: No MOD-ski installed

Figure 2: MOD-ski Installed

To print the “MOD-skis”, please visit

There you will find the print file for the “MOD-skis” as well as the installation instructions.

To give you a better idea of the results this modification can provide, have a look at this “before” picture sent by one of our users who experienced layer shifting on a larger “pineapple” file:

Now, compare that with this “after” photo, which was accomplished with the help of the MOD-skis!


  1. David

    I’ve definitely had this happen. I always wondered if this would still happen if I just used Cura for printing instead, but haven’t had time to make the switch yet. Are people experiencing the same thing with Cura? Or is it just through your web based interface?

    • Daniel Alvarez

      Hey David, it is definitely not something that is caused by the slicing method so if you’re seeing shifting, the move to Cura most likely wouldn’t be the fix. Let us provide you with the locking bars! Shoot an email to hello[at] and we’ll get you taken care of!

  2. TD

    I was looking to build something like this. Nice work. You should have my email now. Thank you

  3. David F

    I have utilized these devices myself for a while now, and they work quite well!

  4. Greg Whitfield

    I have not had a noticeable print skip since installing the locking bra.

  5. Daren Heidgerken

    I am having a similar offset problem but my prints are only 5 mm tall. My print has 5 of the same objects which extends most of the way across the width and depth of the print bed.

    Would these skis help with my print as well?

  6. Mr. Simonson

    I am having issues with my MOD-t stopping mid print, can anyone help me resolve these issues? I have successfully printed for 2 days now and I am wondering if it is a malfunction on New Matter’s end. I also have my own designs loaded into New Matter’s library as STL files and it shows the image in their library as it did in my TurboCad Deluxe 2D/3D, but it will not print the design. Anyone that can help me resolve these issues would be greatly appreciated.
    Mr. Simonson

    • Daniel Alvarez

      Hello Mr. Simonson,

      There are no issues with our servers so this looks like it will need some personalized troubleshooting. Please contact customer support at hello [at] newmatter[dot]com, via direct chat at, or call 1-866-949-8722. We’re open Monday through Friday 9 AM to 6 PM Pacific.

  7. Chris Sauder

    I would like the files sent to me for the skiis. my mod-t likes to jump the table on the gearing causing this problem. Also everytime the printer calibrates the build plate when it moved to the top right corner the plate runs to the top corner then the gears keep going making the table jump. majority of the time this ends up making the table land incorrectly back on the gears and the table will be wobbly. Is this a normal function or is there a fix for it?

    Chris sauder

    • Nick

      Hi Chris,

      Thanks for reaching out! If you haven’t already done so, please feel free to contact our technical support department and let them know a bit more about the problems you are experiencing. Not only will they be able to provide you with the files for the print tray lockbars (AKA “MOD-skis”), they can also help you address any problems you may be experiencing with the calibration sequence. Our technical support department can be reached by email at or by phone at (866) 949-8722 M-F 9am-6pm Pacific. Thanks again!

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