5.Let's-build/Rotor-Blade.md

@@ -13,7 +13,7 @@ new rotor design", p.111, by Nienke Hosman.
 Following variables are used:
 
 | Variables                | mm   |
-|--------------------------|------|
+| ------------------------ | ---- |
 | blade length R           | 900  |
 | wood length L            | 1000 |
 | blade width W            | 80   |
@@ -36,10 +36,10 @@ See pos. 1 in the [BOM](/3.Tools-and-materials/1.Bill-of-materials), not all mat
 
 # Build
 
-## 1. ??
+## 1. Define up- and downwind side of the blade
 
-![RotorBladeSubstractive](/img/RotorBlade/RotorBladeSubstractive.png)
-![RotorBladeSubstractive_10](/img/RotorBlade/RotorBladeSubstractive_10.png)
+![RotorBladeSubstractive](/img/RotorBlade/RotorBladeSubstractive.png "View: Perspective")
+![RotorBladeSubstractive_10](/img/RotorBlade/RotorBladeSubstractive_10.png "View: Looking from blade tip to root")
 
 ## 2. Carving the windward face