Have you ever thought about a label editor?
I am thinking of something like what you can find in advanced word
processors for label printing:
Pick a paper format (e.g. A4), define left/right/top/bottom margins,
define the width and height of the rows/columns and the spacing between them, effectively creating a custom grid on your A4 paper which defines the label sizes and the number of labels per sheet.
Then you add fields to the top left label to define which information
you want on each label, e.g. "part name", "group name", "width",
"length", "job number", "client name" and so on
and then hit the "Generate" button which spits out a PDF with labels for
all your pieces.
Here's a sample made with Adobe InDesign where cards for books in a
library are generated from a CSV file:
The "template" label:
And the resulting PDF: