Ibm Selectric Typewriter Type Element

Discussion in 'Design and Modeling' started by ekerstein, Apr 8, 2018.

  1. ekerstein
    ekerstein Member
    I'm new to 3D modeling and I wanted to ask the community if it's possible to recreate an IBM Selectric type element that would actually work in a machine. If you're not familiar with them, these are interchangeable fonts, also known as "golf balls" that would allow you to type with different styles in the typewriter.

    Here's a video of one in action: https://gfycat.com/SizzlingFineGecko
    Photos: https://imgur.com/a/YrQU6

    FYI - in that picture is a type element next to a 2 euro coin. The width of the coin is 2.2mm. So I'm guessing the width of the embossed font itself is close to 1mm if not less.

    Questions:
    • Is it possible to create a model with fine enough detail? Which material would you use? It has to be fine & strong enough to withstand impact.
    • If it's possible, how would you go about it? What kind of scanning would you use?
     
  2. FreeRangeBrain
    FreeRangeBrain Active Member
    It's likely possible to make one in brass. Being a mechanical part, and likely a finicky one at that, several itterations may be necessary to compensate correctly for shrinkage. Post-casting finishing and/or machining may also be required.

    Possible, but likely quite expensive.