These plans are up to date as of February 2020.  As small tweaks in the design inevitably occur over time, they may not reflect purchased Winnow Wizards exactly.  The plans will be updated in time if a significant change occurs or new component is added that results in a profound improvement – or if accumulated runtime across differing environments reveals a design flaw in need of correction.

Unless you really enjoy tinkering and fabrication or you live outside the continental United States, I recommend purchasing a Winnow Wizard.  With multiple compound angles, <1/32″ (<1 mm) tolerance on some dimensions, nearly 90 different components sourced from ten different suppliers, and 40-50 hour construction time, this is an advanced-level DIY project with high potential for frustration if things don’t line up correctly.

For those outside the continental US I have structured the plans to include a partial kit option to greatly reduce the number of parts that must be sourced, tools required, and construction time.  I am not yet sure what shipping will cost or what import/export hurdles I may run into.  If you are interested in building from a partial kit the first few will be test cases, so please be patient and willing to help me find the best shipping options to your location.  I will update this when I have a few shipped kits under my belt.

The plans are free of charge.  Complete print copies may be distributed to others, but for electronic distribution please link to this page rather than uploading the file elsewhere.  If you use the plans to construct a machine, please see p. 9 for a recommended financial contribution.

If you already have a Winnow Wizard or are planning to purchase one, you may still be interested in the story of the machine’s development on pp. 3-8.

Publication of these plans qualifies everything contained within as “prior art” and therefore not subject to patent controls.  I am committed to maintaining this as an open-source design.

Plans and Assembly Instructions