Hello @mattg6o,
Your profile says you’re using SketchUp Make on a Windows 10 PC.
Here’s a guide to printing to scale for Windows PC users via SketchUp’s native print feature.
https://sites.google.com/site/sketchupsage/master/geo/print-to-scale
There’re a few ways to do do this, depending upon how the model is organized.
Uploading the model with your reply will help us help you.