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Build a handmade wooden multi layer laminate propeller with acurate templates creates with 3D Cad software.
Build a hand made propeller.
In this way it is possible to carve very acurate shape very close to CNC work.
Before start with the wood-work.
The result of our work will be something like this:
Building the propeller step by step.
1. Print the templates. The fisrt step is to print full scale templates, the complete sheet measure 900mm x 2650mm. The best option is to find a local plotting service, it is very cheap, I have paid 7 € for this sheet printing.
2 Cut the templates with the scissors.
3 Transfer the templates over the wood with a marker. In adition to cross section outline it must be also maked a positioners holes. This method to buils a propeller is based in a acurate templates, but it is very important to glue each wood lamina in its exact position.
4 Gluing the wood laminas, It is dificult to keep the boards in its correct position when you press the sandwich. A small pieces of wood inserted into positioning holes is very eficiente method.
5 To give correct shape we are going to use a electric hand planer. This machine is inexpensive and it seems ideal for this aplication. Before start we goint to mark the surfaces to not to remove any material. we mark the front side and behind side with the paper templates.
Tools used in this process are electric planer and angular grinder with multisheet sander disc number 40 or more rough.
Both machines can remove a lot of wood in a short time, planer is used for convex surfaces and angular grinder is suitable for concave surfaces near to root.
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