Patterns for Casting a Steam Whistle

Discussion in 'Pattern making' started by PatJ, Feb 24, 2018.

  1. PatJ

    PatJ Silver Banner Member

    Here is a pattern that I ran across in an old book, and it details how to use retracts (retractable pattern pieces) to make a mold for a steam whistle.

    Its an interesting mental exercise for me to understand how it works.
    I had to read it a number of times to figure out what the process was (this was before I started making patterns; it makes much more sense now).

    When I get a bit of time, I will cast one of these.






  2. Mister ED

    Mister ED Copper

    Thanks for posting that Pat. When I get some time to read slowly (maybe tonight) I want to read through that. Interesting enough there is an article in Home Shop Machinist magazine this month, on making steam/air whistles. I've been wanting to pick up that copy to make one (30 miles away).

    Thought it sounded like a neat machining project ... now maybe a neat foundry & machining project.
  3. Jason

    Jason Silver Banner Member

    If it's as loud as a train horn, I want one! The goal is to give the dogs next door heart attacks! Barking problem solved!
  4. Tobho Mott

    Tobho Mott Silver Banner Member

    Thanks for posting that Pat, it sure looks interesting! I'm gonna have to take some time to digest the article before I can wrap my head around it.


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