Changes
|Shapeways tested 3D models
| align="center" style="background:#F08080;" |Yes
|-
|[https://www.3dagogo.com/ 3dagogo]
|'Tested' parts 'guaranteed' to print
| align="center" style="background:#FFFFE0;" |?
|-
|[http://3dr.adlnet.gov/ US .gov repository]
