9 November 2017
- 19:2019:20, 9 November 2017 diff hist +4 Optimized Blade Design for Homemade Windmills →Estimated Costs
- 19:1319:13, 9 November 2017 diff hist +5 Optimized Blade Design for Homemade Windmills →Maximum Possible Efficiency
- 18:5818:58, 9 November 2017 diff hist +1 Optimized Blade Design for Homemade Windmills →Power Available to the Turbine
- 18:5718:57, 9 November 2017 diff hist +1 Optimized Blade Design for Homemade Windmills →Power Available to the Turbine