Submission Deadline was March 1, 2021. No additional submissions will be accepted at this time.

OASIS Challenge Logo

OASIS Challenge

Together, the Air Force Research Laboratory (AFRL) and America Makes have made tremendous progress in advancing open framework software, controls, and equipment with multi-laser metal additive manufacturing (AM).  However, most commercial scan strategies are proprietary making it difficult to fully understand the process. Therefore, development is necessary in the open-sector to realize improvement in microstructural homogeneity, surface roughness, geometric tolerance, and distortion via optimization of scan strategies. The Open-source Additive Scanning Implementation Strategy (OASIS) Challenge is a direct challenge to the AM industry to advance temporal and spatial thermal management through the submission of innovative scan strategy codes, algorithms, and/or methods.

This Challenge leverages previous America Makes project (4039) where open-source software was developed, along with the current Acceleration of Large Scale AM (ALSAM) project (3024).

Challenge Model Geometries

OASIS Challenge Models

Challenge Build Plate Geometry

OASIS Build Plate

All parts will be printed with Ti-6Al-4V.

Block Volume #1: Participant designed trophy / medallion

  • Block volume bounding size: 60mm x 75mm x 60mm (X,Y,Z)
  • For this part, the consolidated volume (including supports) is limited to 30,000mm^3 (30cm^3)
  • The part must have features (i.e. holes) to allow unfused powder to be drained out
  • There will be no post-processing beyond cutting the part from the plate (i.e. no support removal, no polishing, no heat treatment, etc.)

Block Volume #2: “Mystery Part”

  • Block volume bounding size: 70mm x 75mm x 60mm (X,Y,Z)
  • Mystery part is a representative aerospace component composed of several geometric features including:
    • Thin walls
    • Thick to thin transitions
    • Various radii
    • Overhanging features
    • Channels/holes of various geometries and in multiple orientations

Are YOU up for the Challenge?

Here’s How it Works

Step 1


The OASIS Challenge project data is accessible via GitHub. A GitHub login / account is required to access the data.

Access Data on GitHub »

Step 2


Develop Python, Java, C#, or C++ code that will generate XML and SVG files.

All submissions must be open-source.

Step 3


Submission Deadline was March 1, 2021. No additional submissions will be accepted at this time.


Domestic and foreign members who are in good standing with America Makes are eligible to participate. Only the lead proposer must be a member of America Makes. Participants of the lead proposer’s team may be made up of America Makes members and non-members.

If the lead proposing organization is not currently an America Makes member, the organization must become one by March 1, 2021. Information on how to join America Makes is available on the membership page. (Note: The foreign membership approval process requires a minimum of three weeks to complete.)

Members associated with the evaluation panel are not eligible. This includes participants employed by NCDMM, AFRL, and GE.


August 2020

A direct challenge to the entire AM industry to advance laser-based powder bed additive manufacturing through the submission of computer codes that output laser scan paths with innovative strategies, algorithms, and methods.

Initial Announcement


March 1, 2021

Submissions Deadline:

Code language accepted:
Python, Java, C#, and C++

All submissions must be open-source.


July 1, 2021

Evaluation criteria will be based on:
Tensile Strength
Surface Finish
Geometric Fidelity
Code Quality
Code Run-Speed


September 7, 2021

$68,000 in Total Awards

1st Place:  $25,500
2nd Place: $15,500
3rd Place:  $10,500
3 Honorable Mentions: $5,500 each

**NOTE: The award checks will be written to the America Makes member organization, not to the individual. No award money under this challenge can be paid to non-U.S. citizens from China, Iran, Iraq, Syria, Sudan, North Korea, Cuba, or Venezuela.**

Informational Webinar

(Recorded September 9, 2020)

Questions & Answers

For questions, please contact us at