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Add section drill holes and surface treatement. authored by immanuel ernix's avatar immanuel ernix
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5.Let's-build/Rotor-Blade.md
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......@@ -75,3 +75,13 @@ See pos. 1 in the [BOM](/3.Tools-and-materials/1.Bill-of-materials), not all mat
![RotorBladeSubstractive_19](/img/RotorBlade/RotorBladeSubstractive_19.png)*View: Perspective upwind side*
![RotorBladeSubstractive_20](/img/RotorBlade/RotorBladeSubstractive_20.png)*View: Perspective upwind side*
## 7. Drill root holes
Uses the Rotor Front Mounting Plate as a template to drill the holes in the root.
## 8. Surface treatement
Use sand paper to smoothen the surface. Start with graining 80, then 150, then 240, then 320. Moistening the surface with a sponge or rag. The remaining wood fibre will stand up. Wait till the surface is dry. Sand it one more time with graining 320.
Apply boiled linseed oil with a brush or sponge. Wait 20 to 30 min. Clean off the surface of remaining oil with a rag. Repead the process at least two more times.