# MOTRA screenshots — attribution

The engineering model visible in motra-2.webp is derived from **ONEARMY / Precious Plastic**, [precious-plastic-kit](https://github.com/ONEARMY/precious-plastic-kit/tree/4471659f928153867eee07f26c81dcec79793d76), commit 4471659f928153867eee07f26c81dcec79793d76.

Engineering content and the adapted model image: [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/), as stated in the [official content license](https://onearmy.github.io/academy/start#open-source--license). The three MOTRA case screenshots are shared under that same image-content license. This does not change the license of the website software.

Changes: original STEP/DXF geometry was used to derive a local candidate rotor; coordinate conversion and grouped, recorded-log visualization were added. Source conflicts and engineering assumptions remain disclosed. The published screenshots are cropped, resized and encoded as WebP from actual local MOTRA UI captures. They show a local engineering proof of concept, not validated real machinery. No endorsement by ONEARMY / Precious Plastic is implied.