It always pays to double check the size of your STL design files before you upload them to Ponoko.
Fortunately, it's super easy to do with Netfabb.
- Open your STL file in Netfabb
Analyze your file
Click the Platform Overview button, or press F5
4. Scale as necessary
If your file is showing the wrong size, simple scale it as needed until it's reading the correct dimensions.
5. Export the fileSimply right click the object and chose "Export part" > "as STL (binary)" and save it.