Update 0009_data.md

add link to 3d data

src/routes/texts/0009_data.md

@@ -17,4 +17,4 @@ To facilitate the download of data and query the database, pre-made Observable N
 
 It is always possible to structure additional queries following this [documentation](https://omeka.org/s/docs/developer/api/), and using the `https://uclab.fh-potsdam.de/refa-catalog/api` endpoint.
 
-
+The 3D objects resulting from the 3D scanning and processing are made available in bulk as a [ZIP-compressed directory](https://infovis.fh-potsdam.de/data/refa3ddata.zip) (3.7 GB) containing the OBJ, MTL and PNG files for the respective geometry, material, and texture information for each object.