Loading...

How to Make a Freeze Dryer

350,579 views

Loading...

Loading...

Transcript

The interactive transcript could not be loaded.

Loading...

Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Dec 2, 2013

How to build a cheap-ish freeze dryer. It can make astronaut ice cream, instant coffee, mre's and all sorts of freeze dried foods.

The freeze drying process turns the water in frozen foods into a gas without it ever being a liquid. This sublimation phase shift maintains the foods structure. While that's cool and all, Freeze dryers are't the most useful things unless you do a lot of camping or long trip without a fridge stuff.

You could easily make it for around $200 starting from nothing


I bought the materials at
Mcmaster.com
amazon.com
and various local stores
dry ice can be purchased at most grocery stores
I found the water bubblier at my local dump

There are many different sorts of design options, this is just a more basic one without much automation.

Various warnings:
Dry ice will give you frost bite if you hold it too long. If your glass bowl is too thin it can shatter/implode and shoot glass all over the place. Change your vacuum pump oil if/when it gets cloudy. Use oil when you drill holes in metal. Isoropanol alcohol is flammable. Don't be stupid.

Music: KOAN - Starlite
The still images aren't mine.
Thanks to Ben Krasnow for the insparation

Consider supporting me and my projects on patreon! https://www.patreon.com/Bennbuilds

Loading...

Advertisement
When autoplay is enabled, a suggested video will automatically play next.

Up next


to add this to Watch Later

Add to

Loading playlists...