Winnow Wizard seed separator: Downloadable UK guides
The Winnow Wizard is a density seed separator widely used by small seed producers in the US.
Developed by a seed grower in the Pacific Northwest named Markeal Luterra, the machine creates a laminar flow of air that separates seeds based on density. Because this airflow is highly uniform, the WW offers much greater accuracy than traditional wind winnowing, allowing for fine cleaning and significantly improved seed quality. While Luterra’s plans are open-source, they are specific to US materials, measurements, and wiring regulations, making building a Winnow wizard in the UK a larger and more technical job than necessary.
Along with Adam Veitch and funding from the Pebble Trust, Seeds of Scotland has adapted the open-source Winnow Wizard plans to UK requirements. Download the guides below.
Download the UK-WW plans here:
Example page from the WW-UK building plans.
We recommend using the above plans in collaboration with Markael Luterra’s original plans, which can be downloaded here.
If you would be interested in purchasing a kit to build your own WW-UK you can register your interest here – https://fortworks.co.uk/register-interest/
Open Source License: Winnow Wizard – Metric UK version © 2025 by Darachbeg Croft in collaboration with Seeds of Scotland is open source material licensed under Attribution 4.0 International. To view a copy of this license, visit Creative Commons BY 4.0. Please refer to Plans – Markael Luterra for the prior art open source plans.