Blog Post: The File Size Of .STL And .OBJ 3D Models

This comprehensive guide will explain how to export your STL and OBJ files
How to Print 3D File – Step by Step Guide

When exporting your 3D files, you can change the resolution by altering the tolerance in your CAD software. If you’re unsure, select the ‘high’ preset, as this is the safest option for generating a suitable file for 3D printing. Each CAD software package had a different way of specifying the 3D file resolution. However, most use two main parameters: chord height and angle.
The chord height is important when defining the export settings for your 3D file. This parameter is the maximum distance that your software will allow between the surface of the original 3D model and the surface of the exported file.