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Data Files

We need to define dimensions for all the parts that make up the model. We also need to define placement values that place each part or assembly in the proper position in the model. Using OpenSCAD, we will define parts individually, then assemble parts into assemblies. These may be further combined to produce the final model. Al l of that means we need to set up these constants and do some calculations to get things right.

Rather than place dimensions directly in the files where they are needed, I elected to factor them out into separate data files that get included as needed. The scheme I came up with to organize these data files is outlined here.

Part Data Files

Within each part directory (no subdirectories in these), the part data file contains values needed to create the part. These data files may include other data files as needed to fully define the part. For that reason, all data items include the part name to avois conflicts in other places.

Assembly Data Files

When combining parts (or other assemblies) we need data that helps properly place all components to create the assembly. Data needed for assemblies is located in an assembly data file.

Position Data Files

In order to facilitate design analysis, all positioning data items are located in position data files. These are only located in assembly directories.

Naming Data

All data items have a distinct name. As much as possible, no “bare” numbers should be found in shape design files. Instead, we include the necessary data files to create each component.

Hopefully, changes to the design can be made by adjusting data item values. Changes in the shape design files should not be needed, unless you are changing that shape in some fundamental way.

Data Catalog

Todo

Add a catalog of all defined data. This will be generated using a Python script that scans all data files.