3D Printing Submission General Information

  • Print submission requests are on a FIRST-COME FIRST-SERVE basis.
  • Models will take normally take 24 to 48 hours to complete. This is a general time estimate and will not hold true if models are highly complex or during times of large print volume demands.
  • Stereolithogramic (.STL), Wavefront Object (.OBJ) and Virtual Reality Modeling Language (.WRL) file types can be accepted..
  • Payment is REQUIRED prior to model being submitted to printer.
  • A student who wishes to submit a model must be present at the time of submission.
  • Any issues of non-payment or problems with the model will cause the submission to be removed from the submission queue and placed on hold until all issues are resolved. Once an issue is resolved the submission will be placed at the end of the queue as if it was a new submission.
  • IMPORTANT: Any issues related to model flaws after a job has begun to print does NOT constitute a refund. All refunds are considered by CACP-IT Management on a case-by-case basis. Any 3D model created or edited by SketchUp Pro are Non-Refundable in ALL cases.


3D Printing Costs

Printing cost will be determined based on the weight of material used in grams and the build time of the submission. Cost will be determined at the time of submission and payment must be received prior to being added to the work queue.

Minimum Cost: $3.00

Material Charge: $0.20 per/gram

How to Determine Cost*:  Volume (g) of Material Used = Total Cost
*Support material will be included in total cost of submission.


3D Printer Specifications



MakerBot Replicator+

Print Technology

Fused Deposition Modeling (FDM)

Build Volume

11.6” x 7.6” x 6.5” (29.5 cm x 19.5 cm x 16.5 cm)

Layer Resolution

100-300 microns (0.0039 - 0.012 in.)

Filament Diameter

1.75 mm (0.069 in)

Build Materials*

Polylactic Acid or Polylactide (PLA)


MakerBot Print

*Material datasheets are available to review at the CACP-IT Service Desk


Model Submission Guideline

Each model must be as its own file

  • More than one model can be included in a however each model must be submitted as individual files.
  • Group submissions must be provided as individual files for each model to be included in the build. Each model cost will be determined independently of other models.

Support Fixtures

  • Models submitted for build will be evaluated to determine if a support fixture will be required.
  • Often group submissions will most often require support fixtures.
  • Materials used for support fixtures will be included in the total cost of the model.

File Format – Files MUST be submitted in one of the following formats.

  • STL (Stereolithagraphy)
  • OBJ (Wavefront Object)
  • WRL (Virtual Modeling Language)

Compatible Software

IMPORTANT CONSIDERATIONS: SketchUp Pro is NOT compatible with many 3D printers. SketchUp models have a known vector math flaw causing models to disintegrate after printing. The flaws CANNOT be corrected by another 3D software once created or edited in SketchUp. If any model issue printing occurs, it is NOT REFUNDABLE if determined that a model was created or edited using SketchUp Pro.

  1. CACP-IT Lab Software
    • Rhinoceros 3D 5.0
    • Autodesk 3ds Max
    • Autodesk Revit – There are multiple methods of exporting Revit 3D models one of which is to export to FBX format and then imported into 3ds Max. Refer to 3ds Max Help for further information on how to export Revit 3D Views to FBX to import into 3ds Max at which time then can be saved as an acceptable file formats.
  2. Other Known Software – There are multiple other 3D modeling application that can be used some of which are noted below, however there are no guarantees on 3D printing success with these software packages.
    • Form-Z
    • Blender
    • Modo
    • To many to list them all

Multiple Model Submissions

  • To maximize efficiency of the build process, groups of students may submit multiple models (in separate files) together in the same build submission however each student will be responsible for their own model and related cost.
  • All models must be submitted in a separate prepared file at the same time and all must fit together within the build volume maximum or the submission will be set aside to be corrected.
  • All models in a multiple model submission will be printed in the same color.

Class Group Projects

Class group projects will follow the same payment requirements as Multiple Model Submissions.


General Submission & Printing Process

Submitting 3D Digital Files

  1. Export 3D model to either .stl, .obj, or .wrl format using the 3D software of choice. (IMPORTANT: Not SketchUp)
  2. Log into your shapeways.com account or create a free account if needed and upload your file to complete a quality test.
    • Click “Upload” to select and upload your file.
    • File begin to process taking a few minutes to complete. An image appearing in the display windows does not indicate that the file has passed all quality checks.
    • While model test is processing select “PLA” under the Materials section.
  3. Student will bring their prepared model file(s) and file with a screenshot of their Shapeways results on an external USB storage device to the CACP-IT Service Desk.
    IMPORTANT: Any model built in Sketch Pro MAY NOT work and is NON-REFUNDABLE once printing begins.
    IMPORTANT: Any issue related to a built model not caused by CACP-IT staff is the responsibility of the submitter(s) and is NON-REFUNDABLE for the materials used.
  4. Models will be validated in the print software when submitted for printing. IMPORTANT: If staff finds an issue with your model but you wish to process, the submission will not be eligible for a refund.
  5. Build cost will be determined and the student will be informed of the costs.
    Base Price + Volume (g) of Material Used = Total Cost
  6. If an issue is discovered with the model, it will be returned to the student for correction and resubmission. Model will be re-evaluated and volume re-determination when resubmitted.
  7. A Student 3D Print Submission Form will be filled out and the model will be added to the 3D print submission work-queue on a First-Come First-Serve bases.
  8. When model printing is completed student will receive an email to the provided account that it is ready for pickup. Only the student who submitted the request may pick up the completed model with their UTSA Student ID.