This is a 3d printed ice cream machine...

You'll have an easier time finding ice cream recipes if you search for 'frozen custard' instead - the proper food-snob term for the type of 'ice cream' with which home cooks are most familiar. Alton Brown's Food Network content is usually a safe, sane starting point for recipes. I can speak to the efficacy of external agitation with no internal stirrer from personal experience, at least for small batches. If you ever want an idea for a version 3.0 I'd recommend a way to add a salt and ice jacket for onboard cooling to avoid using up freezer space and to let it run in the open where people can watch the gizmo go.

Fascinating approach. I wonder how much air you were able to incorporate into the ice cream? My understanding about the paddle approach is that it both minimizes water crystal size, refining the texture, and also incorporates air, lightening the texture.

Thank you for the brilliant idea! I tried it! Turning the container inside a freezer does make good ice cream. The design in the video will not fit my freezer so I designed and made one that fits. I also don't have a mason jar so I reused a plastic ice cream container instead.

I really like this upload, man. Hyped for more print-in-place projects!

Amazing design, I‘m definitely gonna build that one and experiment with some weird flavours. Just a side note: if you want to make designs that are easily usable for people around the world, using ikea products is usually a good choice. Their sizes are standardised and they are available nearly everywhere on the planet, so there’s little worry about wether people can find the parts to build the model. In comparison, mason jars are super rare in most countries and so they can be quite expensive (the first one I found on Amazon that didn’t have a grip on the side, a hole for a straw or any other design element specific for making it a „quirky“ drinking glass and didn’t require me to buy in bulk was 11€ plus 6€ shipping)

The ad tangent you went on at the 35 second mark was something!

Oh Wow man this Machine is very good 😃 you are soo good at Thinking about other people's problems and making the product Flawless. Thank you amazing video btw

Aw man, now I’m hungry… 🍦 Fantastic designs!

This is a wonderful idea! And I really like the way you shared your design process, along with the reasoning behind the parts.

Fusion 360 .... never again. However, your designs are pretty damn good; nice work!

I wonder if it could work rotating on the other axis? Because that would then be more compact and easier to store in a freezer, freezers where I am are much much smaller than the US ones, and a device like that wouldn't even fit in an empty draw of most freezers, they don't have the height.

My suggestion would make it able to hook up with a standard cordless drill that most house holds would have

Now this is why I'm subscribed! Perfect everything

You could also use this to make butter at home btw.

Wow! Nice project. Fun video. Now make an unnecessarily complicated version that rotates the jar and spins it at the same time.

Thank you for explaining your design thought process! very well done

Nice job! Keep up the great work. Love to see maker innovation.👍🏻

loved the design and the explanation video great job :)

The fact that you can hear 3d printers in the background of the vo is great lol

6:25 is sooo cool