The run 8 machine WORK IN PROGRESS

Run 8 is the latest model of OSSO, from Oct 26, 2026. It makes the machine smaller and simpler to build and service.

What changed in run 8

• Size: about 993 W x 773 D x 1234 H mm overall.
• One frame: the cart and machine share a single frame on 2020/2040 profiles. The middle shelf is removed.
• Left zone: air parts moved to the top. Electronics sit on a removable plate behind the left panel, with filtered cooling air flowing from bottom to top.
• All lines internal: cables and hoses run inside the machine; the outside side guard is gone.
• Screen arm: the touchscreen is on a tilt-and-extend arm that stows in the front niche. The E-stop is on the niche back wall.
• Door: slide-up front door with an internal interlock.
• Panels: 1.5 mm aluminium.
• Laser: unchanged, with manual focus on a clamped slide.

First build

A first build keeps every safety item: door interlock with safety relay, E-stop, key switch and emission lamp, the full enclosure and slide-up door, fume extraction with an airflow switch, and mains separation. Conveniences are optional and can be added later without rework: screen arm, touchscreen HMI, castors and leveling feet, plug-in connector banks, chamber LEDs, tray drive and cassettes, vision cameras, door counterweights.

Bench experiments first

1. X/Y motion on the 2020 frame (E-stop wired first)
2. Tray slide and drive (optional)
3. Manual focus column
4. Enclosure, slide-up door and interlock chain
5. Fume extraction
6. Electronics plate and heated bed thermal tests
7. Laser source, base and chiller in the lower bay

Renders

See also the to-do list, journal and decisions. Docs are a work in progress.