Sky high flat cars

The trouble with building a batch is that when you make a mistake, you replicate the mistake for each member of the batch. So, despite passing Saturday morning enjoyably melting tiny pieces of plastic strip into globs that look passably like body bolsters, I now have three flat cars that all sit approximately .030″ (.75mm) too high.

Some analysis with the drawing and a pair of calipers traced the error to several mis-measurements and mis-calculations, each contributing a small amount. Together the small errors add up to a clutch of models that tiptoe on the rails like ballerinas, rather than hunkering in their boots like the lumberjacks they are meant to be.

It’s too bad, because not only do the iron body bolsters look cool, they are also now incorporated into the brakes. Fixing this is going to take some thought.

6 thoughts on “Sky high flat cars

  1. Sorry to hear that. That’s frustrating. I’ve done the same thing,. Thinnking I had the correct reference and finding out it is wrong well into a project. Carried incorrect measurements. Or forgetting to factor in material thicknesses. They do look great. I hope you find an easy solution.

    Take Care
    Greg

    1. Thanks Chris. As I go back to the flat car drawing, I am struck by how cavalier I was about the design.

      Yes, those are the trucks I had printed at Shapeways some time ago. They are the Canada Atlantic standard pattern, and 3D printing saved the railway with them.

  2. Instead of mucking about fixing them why don’t you just finish them off as the prototypes they are and make a proper batch. Sell the rare and valuable prototypes on early rail if it comes to that.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.