Subscribe to Make Magazine Today!

The wooden pattern of a ship propeller is used to create a mold in the foundry. Huge! [thanks, Adon!]

John Baichtal

John Baichtal

My interests include writing, electronics, RPGs, scifi, hackers & hackerspaces, 3D printing, building sets & toys. @johnbaichtal nerdage.net


3 Responses to How to Create a Marine Propeller Pattern

Your Thoughts?

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>

  1. While I love the craftsmanship involved (and I really like the wood grain effects from stacking the plywood!), from a cost perspective I wonder why they’re not doing this by some sort of CNC process? I would think the propellers are designed by computer (anymore I’d hope for ones of that size they’re doing a lot of flow modeling), why not just stack the plywood, then put it in a CNC? I can’t imagine it would require more than two setup with a 5-axis cnc mill.

  2. You could certainly use CNC & the lost foam process to do it. I’m thinking that ship props don’t change as much so making a more durable master is a better idea. Plus it shows that not all of the pattern making skills aren’t lost.

  3. diluded000 on said:

    I like how fast he was able to lay all that out with a compass and ruler. I suppose it would be possible to create a CAD drawing for every layer, then laser cut them. But I’ve done enough with my CNC machine, and enough furniture and boat building, to see that a pencil/compass/straight edge is faster and far more economical for a good number of things.

Related Supplies at Maker Shed