Holy smokes. Brilliant design and implementation. Shock diamonds out of a 3D printed engine is not something I expected to see, least of all not for as long a burn time as you achieved. I'm not surprised the smaller chamber worked better. With all the turbulence caused by the vortex the combustion should be extremely rapid and require little space to complete. Excellent video production also.

YOU'RE A FREAKING GENIUS!! That's so smart!

Absolutely awesome! Holy smokes what ingenious engineering! Love it

You hit this video quality straight on the head!!!! Love the use of Bokeh in the shots. How the combustion chamber is able to hold the outward pressure, when only built of resin is quite impressive.

I clicked on this video thinking this was just gonna be a compilation of some test clips, but no, it was

Awesome, did you try printing the nozzle in ceramic resin.

KZfaq ! WHAT ARE YOU DOING??? This video needs 10 million views asap! Brilliant work, not only the 3D-Printing-Rocket-Engine part but also the camera work and narrating is of the charts!!!!! ♥️

I randomly stumbled across your channel while researching swirl injectors, and woah.. I am lost for words at the quality and ingenuity involved in making this video! Hope you get the recognition you deserve!

That is ridiculously clever. Eliminates the need for an engine bell, and cooling thereof.

Integza, you need to see this!

Really well produced, I especially loved how elegantly you explained the concept with the vase and ball-on-a-stick, really high quality educational content!

The filming is ridiculous!!! Some really well filmed and perfectly composed shots! Great work!

I am literally astonished by the quality of both the ingenious design and editing on your channel! Keep it up!

First of all, great content! Second, thanks for not padding the runtime and over-hyping everything. Earned my sub for sure.

Great video Sam. Beautifully illustrated and explained. Love it!

I knew about vortex tubes but putting it in a rocket is a bright idea. Very good.

This video was a game changer for your channel. Keep up the good work

Wow, absolutely blown away by your dedication.... please make more!!!!!

epic work sam! so inspiring not only the subject, but your accurate way of visually telling a story to the fine detail!

At first I thought, what is special about this, it literally how 95% of rockets work these days. Only after I realized that the parts where 3D printed I realized how awesome this project is. 👌👍