Indian space startup fires world’s first fully 3D printed rocket engine

Kudos for the progress Agnikul Cosmos has made and I wish them great success.

Prior art:

https://www.relativityspace.com

https://3dprint.com/111799/nasa-3d-printed-rocket-engine/

https://www.technologyreview.com/2019/06/19/134877/rocket-la...

https://hackaday.com/2020/12/08/sla-3d-printed-vortex-cooled...

https://www.youtube.com/results?search_query=3d+printed+rock...

https://3dprint.com/278184/startup-accelerator-ursa-major-is...

I love hearing great news about the space industry, that the way to get us humans into outer space.

Can any one a little more knowledgeable explain the difference between this 3d printed engine and RocketLab's one? Thanks!