Markus Kruse also known as Terrain4Print is an online creator who makes printable 3D terrain for wargaming. Almost every single one of his designs are free with a variety of Sci-Fi and Fantasy terrain, buildings, ruins, and vehicles. If you appreciate his work do not hesitate to support him on patreon or buy some models on gumroad.
Terrain4Print currently has a Merchant Tier of their terrain on Patreon for $15 a month.
Located on their patreon page there is a list of liscensed sellers. If you are interested in these models and do not have a 3D printer check out their post. Patreon list of official resellers.
Have a review, insight or knowledge of more models made by Markus? Feel free to reach out to help fill out information on this sculptor to help provide the most up to date information on the site!