Submit a 3D Print Request

Learning Target

• Slice an STL file for printing
• Configure print settings for a reliable print
• Save a slicer project in 3MF format

Printing Time

Instructions

Step 1: Open the Slicer

Start Ultimaker Cura. 

Be patient. It can take some time to load.

Confirm that the correct printer and filament type are selected in the prepare stage:

Step 2: Import and Position an STL File

You can print your own model, or find an STL file from one of these sites:

• • Thingiverse.com
  • Printables.com

Import the STL file you want to request to print.

Resize and rotate it so that it:

• • Fits within about 25 squares of the bed
  • Sits flat on the bed
  • Is rotated so that the largest flat surface is on the bed
  • Has supports where needed

Do not make the model so small that thin parts become fragile.
If necessary, modify the model or choose a different model to print.

Step 3: Take a Screenshot

Take a screenshot showing the model before slicing.

Step 4: Optimize the Print Settings

Change these settings for printing:

• • Set the infill pattern to Gyroid.
  • Set the infill density to 10 to 20%.
  • Set the number of walls to 2 or 3. Since each wall is 0.4mm wide, this is 0.8mm or 1.2 mm.

Generally, the wall thickness is more important to the strength of a printed model than the infill. However, to have a very strong model you would increase the infill as well.

Step 5: Slice the Model

Click Slice.

Carefully scan through the sliced layers in Preview mode by using the slider.

Look for areas that seem to start printing in midair or areas with large overhangs that may need support underneath them.

Ask yourself:

• • Are there parts of the model that do not have enough material under them?
  • Are there sections that seem likely to sag or fail without support?

If your model needs support, turn on automatic supports.
Most sculptures with overhangs or floating parts will need supports. 

Slice the model again.

Step 6: Save the Project File

In the main menu, click File → Save Project...

Then, save your project into your H: drive (the drive with your username).
This will save your project as a 3MF file which includes:

• • The STL file
  • Position, rotation and scaling of the model
  • Print settings (walls, infill, supports, etc)

Before You Submit

Make sure:

• • your printer was set to MakerBot Sketch
  • your material/nozzle was PLA 0.4mm
  • your walls were set to 2 or 3 (0.8 or 1.2 mm)
  • your infill was set to Gyroid, 10 to 20%

Be sure you have:

• • the screenshot of the model on the bed
  • the .3mf file