The site has been running very slowly lately due to increased traffic! If it's not working, please try again in a few hours! I'm working on increasing reliability. Thanks!
Terrain2STL is a free-to-use service, but if you want to help support the site, donations are welcome.
Terrain2STL creates STL files using the SRTM3 dataset from 2000,
which has a resolution of about 90 meters on the equator.