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Prepare your 3D File for Printing


Use an existing file from Ready-To-Print 3D Designs on our Resources page.

  1. Go to
  2. Choose a model
  3. Download as an .stl file
  4. Submit file

Beginner Plus

Review your file before printing to check size.

  1. Open Cura app * (available on 2nd floor internet computers at Old Town Library)
  2. Load your model file
  3. Resize/scale, if desired
  4. Save model as an .stl file
  5. Submit file

*Instructions for downloading Cura to your own computer are available on the LulzBot website.

Intermediate to Advanced

Modify an existing file or create your own using any 3D modeling software.

  1. Go to
  2. Choose a model
  3. Export as an .stl file
  4. Submit file

File Format

Export your model with an .stl extension. (STL = stereolithography) We cannot accommodate any other file format. Only file submissions under 50MB will be accepted.


We use PLA (Polylactic Acid) and Chromastrand filament in our printer. We will only print with filament we have purchased.


Your model will be printed in a single color of your choice. If you would like to see the color choices in person, stop by the 2nd floor of the Old Town Library.


The Maximum size the Lulzbot Mini 2 can print is 148mm x 148mm x 170mm (5.8in x 5.8in x 6.7in). However, the time it will take to complete a print job will factor into the maximum size of an item. Print jobs will be limited by both the maximum size and the maximum amount of time needed to complete.


Conversion ruler

We recommend you build your model in millimeters or convert to millimeters before submitting the final file. Please see our conversion ruler to compare millimeters to inches.


The default settings are: medium resolution, 0.25 mm per layer with 20% infill. These settings are sufficient for most models. If you need something different please specify in the Special Instructions box on the 3D Printing Request.

Supports and Rafts

Some models will not print well without supports or rafts. Supporting structures are usually needed if the design includes a section that protrudes from the base at more than a 45 degree angle. Occasionally, a raft must be added to a design to help it adhere to the printer bed. Library staff will use their best judgment in adding supports or rafts to your model. The library will not be responsible for removing supports or rafts from a print job.

Where to get Models

You can find resources to download existing models, customize models or create your own on our Resources page.

Submitting Your Model

Once your model is ready to be printed, submit a print request on our 3D Printing Request Page and upload your .stl file. We will contact you via email within 1-3 days to confirm your request. We cannot guarantee a file's success. Once your job is complete you will be notified via email. You may pay for and pick up your item from the circulation desk on the 1st floor of the Old Town Library. We accept cash, check or charge. We will hold print jobs for 30 days. Items not claimed in 30 days will become the property of the library.

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