How to Build a Freeze Dryer

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  • Опубліковано 23 гру 2024

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  • @jasonyeag
    @jasonyeag 4 роки тому +236

    top 10 ways to make your neighbors think you have a meth lab

    • @jbstepchild
      @jbstepchild Рік тому +4

      I need them to know where to get it

    • @Itried20takennames
      @Itried20takennames Рік тому +4

      Hah…so true. Can’t imagine the in-laws or a landlord seeing this set-up sprawled across the kitchen, with no explanation.

    • @Seegsoutdoor
      @Seegsoutdoor Рік тому +1

      😂

    • @zackengelhart2
      @zackengelhart2 Рік тому +2

      Shhhhhhhhhhhhh it is weed stuff I swear mam I just separated the resin from the plant

    • @KvisTwig
      @KvisTwig Рік тому

      jesse we need to freeze dry fruits

  • @900darmah
    @900darmah 4 роки тому +41

    I just found this. Very good and informative. As an owner of a lyophilizer service company I only have 1 criticism. You keep stating that no heat is applied. This is against the criteria of sublimation. Heat is ALWAYS used in freeze drying. This is how you achieve sublimation and desorbtion in time. Heat is applied either radiantly, or more common, through conductance. Other than that, very informative.

    • @pieterveenders9793
      @pieterveenders9793 Рік тому +6

      Considering you need a vacuum of at least 611 pascals to reach the triple point of water, where it goes directly from ice to gas at 0C or higher, do you still need to apply external heating to the vacuum chamber? Is the freeze drying apparatus being in a room temperature environment not enough, seeing as theoretically the ice sublimates at 0C and above anyway? I've read that for the tail end of freeze drying things like fruit or other organic material you sometimes need to apply a small amount of external heat to overcome the molecular attraction between that last bit of water and whatever it is locked inside of, but for the first 90-95% external heat should not be necessary I thought?

  • @styropyro
    @styropyro 7 років тому +164

    awesome project! buying a lyophilizer is expensive even used...it's cool to see this done so cheaply (other than the vacuum pump). ill have to give this a try!

    • @thethoughtemporium
      @thethoughtemporium  7 років тому +41

      Thanks :) Ya I was looking at buying a used one, but the price was insane. Was so much easier to just build it.

    • @davidmontoya3997
      @davidmontoya3997 5 років тому +7

      @@thethoughtemporium how well would it work to use a used refrigerator compressor for the vacuume pump?

    • @thethoughtemporium
      @thethoughtemporium  5 років тому +12

      @@davidmontoya3997 not at all. needs a better pump than that.

    • @davidmontoya3997
      @davidmontoya3997 5 років тому +7

      @@thethoughtemporium My second question is do you think it would be possible to modify a deep freezer to hold the required vacuum and have a separate water trap compartment built in as well?

    • @maxk4324
      @maxk4324 3 роки тому +8

      @@davidmontoya3997 No, typical deep freezers are not built with vacuum sealing in mind, You would likely end up swapping out the entire interior compartment and the door along with all sealing elements. By the end it would likely just be cheaper and easier to build a vacuum chamber that size from scratch and then to cannibalize the refrigeration system from the deep freezer to cool the vacuum chamber. That is effectively what you would end up with anyway if you tried to convert the deep freezer into a deep vacuum chamber.

  • @dilboteabaggins
    @dilboteabaggins Рік тому +5

    This is quite late, but instead of Teflon tape, use a product called nylog on your thread fittings. It acts as both a thread lubricant and a thread sealant. It never dries or cracks. It's what I use on all of my refrigeration systems I need to evacuate. My manifolds can easily reach 50 microns Hg/50 mTorr. I have found that Teflon tends to be a bit leakier. With that said, I also only used tapered fittings or flare fittings on my vacuum setups.

  • @nicholi8933
    @nicholi8933 4 роки тому +9

    I just watched the King of Random do something with freeze drying. I was a bit curious on how the process was done so I googled it and you were the second video. The first being basically and ad for a freeze drying company. This was really neat. I figured it had more to do with a vacuum considering the cost of the pre built machines. Thanks.

  • @mikec3820
    @mikec3820 3 роки тому +21

    awesome build. wish there was a affordable home/mini sized freeze dryer on the market..

    • @gina248
      @gina248 2 роки тому

      Agreed ! I’ve been searching for years for a mini kitchen one and they are all large and expensive

    • @mikec3820
      @mikec3820 2 роки тому +2

      @@gina248 even the "home" model harvest right is 3000$ and it doesnt even come with the software id need for my applications (hash lol) needs the pharma grade software . the pharma grade HR is 7000$. to rich for my blood. air dry it is haha

  • @Lardzor
    @Lardzor 6 років тому +13

    I think keeping the drying chamber below freezing during the entire process is preferred. That is to say, below freezing and not below zero F. Sublimation still occurs and you don't have to worry about the cellular structure getting smushy.

    • @Hansen710
      @Hansen710 Рік тому

      they do sell heating mats for them.
      i doubt freezing is the best..
      after all temp differences are used to move gasses, or to make gases liquid or liquid into gases.. (and that is what we are working with in this method)
      the importent thing is probetly the temp diffence, and not the temp.
      as long as you stay within where nothing usefull is destroyid in big amounts..
      terpens can be collected with freeze drying (with the right temps), so you can also collect the taste and smell to some degree. (and those are not collected when the proces is at its coldest point)
      probetly not anuff to taste any difference, but you would be able to collect some very tastefull and nice smelling aromas

  • @shdwbnndbyyt
    @shdwbnndbyyt 5 років тому +18

    Wow. I used to use freeze-dryers (Edwards) for lyophilization of pharmaceuticals from both aqueous & non-aqueous solvents. Our shelf temperatures within the lyophilization chambers were on a separate temperature control circuit so we could drive the process by adding heat to the subliming vials of product. I also used the chambers to add a special gaseous headspace to a liquid diagnostic product that is on the market today. I was actually given a product that I had performed pre-approval development work on. Of course most of the products I worked on were for cancer or HIV, so I am quite glad I never needed those.
    BUT, I never got to lyophilize STRAWBERRIES!!!

  • @maxk4324
    @maxk4324 3 роки тому +6

    If you ever need to make more cryo insulation I would recommend closed cell polyethylene foam. We use it at work for LN2 plumbing and it works a treat. If you stick with the polystyrene though I would recommend investing in some nichrome wire, a 12V battery, and either a high power pot for voltage splitting or, for more efficiency and less heating, a variable buck converter to adjust the voltage across the wire. Basically I'm describing a DIY hot wire foam cutter. A lot better than using an exacto, I can tell you that much.

  • @souravzzz
    @souravzzz 6 років тому +42

    You are just like an young version of Ben from Applied Science, someone who I have a lot of respect for. I hope you continue to make such great videos on diverse topics!

  • @arleneelainelittlechild1562
    @arleneelainelittlechild1562 Рік тому +3

    The dry ice purchase itself is ridiculously expensive
    What did it cost to build this and break down cost to freeze dry strawberries?
    I freeze dry food now in regular freezer, lay it out on baking sheets, flip every couple days, in 10 days or so, depending on what im freezing, up to 3 weeks.
    Stand up freezers are great for this and a lot cheaper

  • @ChrisMuncy
    @ChrisMuncy 7 років тому +23

    I've always been interested in making one of these myself, very nice. The only thing I would change is get rid of the styrofoam and get some closed cell foam, like the sheets of insulating foam you can get at the big box hardware stores. Easier to cut clean edges with.

    • @thethoughtemporium
      @thethoughtemporium  7 років тому +21

      I was considering it but the styrofoam was half the price and fit in the car haha

    • @chancetolbert4852
      @chancetolbert4852 2 роки тому

      Couldn't you just tube it up into a deep freezer?

    • @bornfree2237
      @bornfree2237 2 роки тому +2

      @@chancetolbert4852 I think the temperature needs to swing a bit to entice the sublimation, but I have always wondered if just sealing up my deep freeze and putting a vacuum
      would work for some foods. I know it's worked on a few steaks I forgot about at the bottom of mine.

  • @outsmoker420
    @outsmoker420 Рік тому +5

    Can i use a rolled ice cream machine to sit the big pot on instead of dry ice? Will it be cold enough or maybe that plus dry ice? I would think the rolled ice cream machine could help maintain the temperature? I know this is a old video but can't find a answer to my question anywhere. Thank you to anyone with information

  • @doodybird5766
    @doodybird5766 2 роки тому +4

    Oh lordy.. I was looking at freeze dryers and there's no way I can afford 2 or 3 thousand dollars for one. Then I think ... Hey, maybe I could build one.. Then I see this and look at my DEHYDRATOR and tell it, Don't worry, I'm not dumping you.
    Holy crap on a cracker!!
    LOL
    Macgyver is staring at me with a knowing smirk like he's saying I told you so lol

  • @doraran2138
    @doraran2138 5 років тому +2

    Dollar Tree Stores have small bags of freeze dried fruit for $1.00. Strawberries, peaches, apples, mixed fruit. 70-80 calories a bag. An alternative for those of us that like freeze dried foods as snacks but don't have time or money for freeze dryer.

  • @briannacooper8381
    @briannacooper8381 Рік тому +1

    Also freeze drying food stops histamine growth completely making it the ideal food storage method for those suffering from gastrointestinal discomfort.

  • @totallynotdelinquent5933
    @totallynotdelinquent5933 4 роки тому +221

    I'm gonna use this to make magic mushrooms last super long without being leathery.

    • @johnr8996
      @johnr8996 4 роки тому +7

      That's a good idea

    • @randeeeller8892
      @randeeeller8892 4 роки тому +6

      Did it work well?

    • @tobylangdale95
      @tobylangdale95 4 роки тому +24

      Do you regularly read minds from afar?

    • @ucid5363
      @ucid5363 4 роки тому +4

      ima have ta hop on this wave

    • @darthyda
      @darthyda 4 роки тому +2

      That is just godlike!

  • @stevie_jean1953
    @stevie_jean1953 2 роки тому +7

    One of the only video I could find. Thank you. Was trying to see if I could build a big one like almost walk in. And how they actually worked. Thanks great video.

    • @bornfree2237
      @bornfree2237 2 роки тому +3

      That's a lot of -pressure in a huge area, basically a bomb if it fails. Unless you're working for NASA, it's going to cost about a Mil in steel and labor for welding the structure alone.

  • @JustWickedSwede
    @JustWickedSwede 7 років тому +383

    Fun fact:
    "Astronaut icecream" have never been in space and have never been intended to be eaten by astronauts.

    • @thethoughtemporium
      @thethoughtemporium  7 років тому +149

      If I ever become an astronaut, I know what I'm bringing with me then

    • @WatchingMyLifeFlashB
      @WatchingMyLifeFlashB 6 років тому +21

      En Person The comment should read 'has' in the places it now reads 'have' as 'Astronaut Cream' is singular. Now if you said Astronaut Creams, flavors, types, or varieties, 'have' would be appropriate

    • @morescodesup2087
      @morescodesup2087 6 років тому +26

      Astronaut bacon is a thing
      And it needs be known

    • @lordgarion514
      @lordgarion514 6 років тому +44

      En Person
      You're only half right.
      It never went to space.
      But it was developed under a NASA contract for the Apollo missions. So it was very much intended for them to eat it. The problem was it was found to be to crumbly, so it didn't get to go.

    • @askhowiknow5527
      @askhowiknow5527 6 років тому +1

      En Person “has”, not “have”

  • @elneneeserio
    @elneneeserio Рік тому +2

    Can you build another one now to see how much h it would cost but that freezes without dry ice ?

  • @tge3069
    @tge3069 4 роки тому +5

    A/C accumulator w fittings
    A/C oil
    A/C condenser
    HD vacuum pump
    Vacuum pump fitting & sealant
    Temp gauge
    Put condenser into container & seal holes,
    Fill w enough oil to fill condenser,
    Attach both lines of condenser to accumulator,
    Attach vacuum fitting,
    Apply vacuum until reaches preferred temp,
    Freeze w/e for however long
    The end

  • @riverafter9500
    @riverafter9500 5 років тому +22

    I’m curious to know what your final build cost was? Freeze dryers are ridiculously expensive.

    • @Nice-qi5cf
      @Nice-qi5cf Рік тому +3

      Right?

    • @Devildog2069
      @Devildog2069 Рік тому +1

      Yeah how much

    • @phylliida
      @phylliida Рік тому

      $180 Field Piece SVG3
      $30 2 Gallon Stainless Steel Cooking Pot
      $100 Two 2 Quart Stainless Steel Vaccum Chamber ($50 each)
      $3 1/4” Flare Union
      $7 5/8” Barb Splicer
      $25 Styrofoam sheets
      $15 Spray Adhesive for Foam
      $15 High Grade Teflon Tape
      $9 J-B Weld
      $10 Thermal Work Gloves
      $25 Denatured Ethanol
      $150 2 stage rotary vane vacuum pump
      Total $569
      Each time:
      $5 Dry Ice

    • @tthtonekid
      @tthtonekid 11 місяців тому

      Built on Amazon like 400

    • @TreetheTree-r6h
      @TreetheTree-r6h 17 днів тому +1

      @@phylliida You're deeply underappreciated.

  • @superdupergrover9857
    @superdupergrover9857 5 років тому +17

    BTW, regular J-B Weld, and long set time epoxies in general, are stronger than the quick set ones. The quick set kinds use different chemicals that result in a weaker resin.

  • @ricrea135
    @ricrea135 4 роки тому +1

    Can I put damp rid in water collector so it doesnt have to be kept so cold

  • @gibrandelvalle5555
    @gibrandelvalle5555 7 місяців тому +1

    So, the vacuum pump keeps running the whole six hours? Or you just shut the handle of the water chamber and then turn the vacuum off?

  • @SICKFREDO
    @SICKFREDO 4 роки тому +3

    can an aluminum pressure cooker be used instead of the stainless steel chambers?

  • @GrayEmbry
    @GrayEmbry 2 роки тому +1

    Ebay links are prone to link rot... any chance you could just list the full names of things like the vacuum chambers, cooking pot, vacuum gauge and vacuum pump?

  • @reluttr2
    @reluttr2 6 років тому +66

    Why didnt you just use spray foam to insulate the larger pot?

  • @AaronC.
    @AaronC. 2 роки тому +1

    Could this work just freezing the food, and then putting it in a vacuum generated by a hand-pump? I'm trying to make a science-project on how to freeze drye food with only a few tools and materials.

  • @chancetolbert4852
    @chancetolbert4852 2 роки тому +1

    Is there a way potentially you could tube it up through a deep freezer and instead of dry ice and styrofoam it just goes inside a deep freezer

  • @MiddleAgedMisfit
    @MiddleAgedMisfit 4 роки тому +1

    What kind of savage slices strawberries with the stem on?

  • @kerrimtthefrog1001
    @kerrimtthefrog1001 5 років тому +13

    Crushing the dry ice to a powder speeds up the process and Ive used paint thinner for a cryo liquid but I was just messing with stuff cause I get free dry ice sometimes

  • @kirkmyers1909
    @kirkmyers1909 Рік тому +1

    Wondering if a molecular sieve would work just as well as a cold trap. 🤔🤔🤔

  • @Dmbm789
    @Dmbm789 4 роки тому +3

    0:01 that building is so good it looks animated

  • @jacob9583
    @jacob9583 Рік тому

    Why do you need a big gallon pot for the condesing portion? Why not just use a metal pipe insulated an frozen? Is thete a ton of ice build up or something?

  • @MaacAbra
    @MaacAbra 4 роки тому +13

    That’s amazing. Could you please estimate how much time and cost would it take to prepare specified amount (100 grams for example) of fruit like strawberries and other food that you tried it with?

    • @Scrotux
      @Scrotux 3 роки тому +2

      A yield of 20-30% would be good. He says 6-14 hours after flash freezing. I run industrial multi phase freeze dryers with 1500lb capacity and takes us 17-19 hours depending on size and type of product

    • @CCAnne
      @CCAnne 2 роки тому +2

      @@Scrotux we’re trying to make one

  • @noxplanationgaming
    @noxplanationgaming 2 місяці тому +1

    READ! So if you actually do this just know one thing. "Militor" is the same thing as micron level! So when looking at a pump, find the micron lvl and make sure it is below 100 Microns

  • @edwardhumble913
    @edwardhumble913 4 роки тому +5

    I would like to get a parts list from you and diagram on how to build this

  • @uchiha1000
    @uchiha1000 7 років тому +10

    do you have a list of items you used to make this?

  • @samueltaylor4989
    @samueltaylor4989 5 місяців тому +1

    Why not use desiccant instead of all the trouble of dry ice.

  • @3dp_edc
    @3dp_edc 3 роки тому +1

    How much dry ice (and alcohol?) per hour is used would be interesting to know

  • @flonpdinglechalk7920
    @flonpdinglechalk7920 5 років тому +20

    Dude your videos are really cool and interesting, and im glad that I found your channel. Keep it up.

  • @Zachary-qp1jp
    @Zachary-qp1jp 5 років тому +1

    Were did you guys find the vacume pump can I please get a link

  • @jacobcroy6217
    @jacobcroy6217 4 роки тому +1

    How exactly do I understand what compressors output enough militorps. Trying to google an understanding of what militorps are came up half empty and I’m still not understanding what it’s relevance to psi is?
    If anyone could explain I would appreciate it.

  • @rickcoona
    @rickcoona 6 років тому +8

    i am really interested in hearing how your carbon foam turns out this was very helpful, Thank you good Sir!

  • @World_Theory
    @World_Theory 6 років тому +8

    The comment at the end about making a carbon foam from bread in the kiln, reminds me of a video I saw from AVE. He did just that by burning the bread without allowing it oxygen. I thought it was really neat, so I've been thinking about it for a while. What if you used popcorn instead of bread? And then, I wondered if you could make high temperature refractory bricks using the presumably resulting carbon foam pellets, by misting it lightly with water, and dusting it with dry (unfired) clay, and repeating this until the pellets build up a thin protective shell of clay. Then you would pack them into a brick mold in layers, with a light mist of water and a light dusting of clay in-between each layer. I think a handheld old fashioned flour sifter would help to apply the dust evenly. I also wonder of being able to incorporate grog (crushed, fired pottery), in dust or fine grit form, to help with thermal shock, incase the version made without it has any trouble. Anyway, the brick should be allowed to dry very thoroughly, and not too quickly, so that it doesn't explode in the kiln, or crack while it's drying, from the pressure of water vapor trying to escape too quickly, or the strain of the brick contracting unevenly from drying out.
    I also thought about adding the clay shelled carbon foam pellets to the kiln individually, but I wonder how you'd get them packed in efficiently, without having them all stick together during the firing, if they're touching eachother. Maybe coating them with some kind of ash? But if you could fire them as individual, loose pieces, you could probably actually use them as grog for clay bricks, without actually crushing them up, like one would normally do. That way, you could create custom shaped refractory clay pieces for ovens and things, without having to try to make them from assembling a bunch of bricks.

  • @donaldasayers
    @donaldasayers 6 років тому +35

    Could you freeze dry something bigger, like say a body? Just asking for a friend.

    • @fistpunder
      @fistpunder 5 років тому +12

      And someone just made a watch list.
      LOL

    • @gp1971
      @gp1971 5 років тому

      That’s funny!!!

    • @mikaelgaiason688
      @mikaelgaiason688 5 років тому +22

      @@fistpunder They don't bother with lists any more, they just watch everybody and store all communications. Or were you not listening when Snowden spoke up?

    • @PANCHOVILLA4U67
      @PANCHOVILLA4U67 5 років тому

      🤦🏻‍♂️ lmao 😂😂😂😂

    • @AtlasReburdened
      @AtlasReburdened 5 років тому +4

      @@mikaelgaiason688 My dude, he couldn't detect the sarcasm in OP's comment, there's no way he was paying attention to Snowden.

  • @aguileraq77
    @aguileraq77 10 місяців тому +1

    When I was searching for DIY Freeze drying, I was really hoping I'd find a video that said -- "Stick desired freeze dried item in the very back of the freezer and wait"

  • @swordoff7
    @swordoff7 4 роки тому +1

    A good idea to build this unless there's children around. Then this has to be secured away from them.
    Other than that, the volume produced is small. Not too handy for survival food storage when one needs a healthy portion to put away.
    Do the math. It takes one year of constant freeze dry production with a 4 shelf home freeze dryer to put away enough emergency food for 4 people to last through a long term crisis.
    However, it sure looks like it's a good fun project to work on.
    Good luck with freeze drying the magic mushrooms.

  • @johnanders8861
    @johnanders8861 6 років тому +3

    For the vapor trap, I used some stainless steel fins from some scrap 304 stainless steel to increase the surface area and help less water vapor make its way into the Vacuum pump. I learned that the hard way and ruined a $1000 vacuum pump and vacuum fittings.

  • @CreepyChappy
    @CreepyChappy 3 роки тому +1

    Nice gloves for the dry ice

  • @funny-video-YouTube-channel
    @funny-video-YouTube-channel 6 років тому +1

    Great project. It worked. The next step is to build a box with massive insulation around the freezers.
    Have fun with your *freezing powwrs !*

  • @CarolP2045
    @CarolP2045 3 роки тому +3

    Thats really smart but I dont think I would go through all that for 3 slices of a strawberry. Guess that is why the machines cost as much as they do.

  • @TheRichardellison
    @TheRichardellison 4 роки тому +5

    Thanks for the video. Now im definatly just going to buy already made freeze dried food even though its very expensive, which i can see why

  • @cazhalsey8877
    @cazhalsey8877 5 років тому +3

    Total cost of components used and bought to sum up how expensive this would be?

  • @marlonecorpuz4211
    @marlonecorpuz4211 4 роки тому +1

    can you use an oilless pump so you don't need to condensate the water vapor?

  • @lukeuhlmann4802
    @lukeuhlmann4802 3 роки тому

    How does the water trap work? The whole idea of a freeze dryer is to get the ice to vaporize, how does it recondence while still under vacume?

  • @jackliptak8035
    @jackliptak8035 2 роки тому +1

    Does anyone have a vacuum to recommend that works well? Preferably budget?

  • @ninitehchsnavi5238
    @ninitehchsnavi5238 3 місяці тому

    For the sake of food preservation does this need to be super cold? If you don't care that your food keeps its shape would just pulling a strong vacuum dry it out? Or will this cause it to be unappetizing? This would be much easier and cheaper that cooling it down.

  • @whiskyweasal89
    @whiskyweasal89 4 роки тому +2

    What would change if I want to build a bigger unit? Say I want to make an entire gallon of astronaut ice cream.

    • @noxplanationgaming
      @noxplanationgaming 2 місяці тому

      I would do as he said, realistically, the water chamber does not need to be that big. I would do a 3 gallon dryer, and a 2 quart water chamber.

  • @أمجدالعياصره-م7ش
    @أمجدالعياصره-م7ش 3 місяці тому

    How did you do it without slow heating? You saw in the previous videos that the shelves are slowly heated to practice sublimation.

  • @weshbesh2635
    @weshbesh2635 3 роки тому +1

    Overall, how much did this all cost you? And how much would every run cost everytime you need to replenish the dry ice and alcohol?

  • @__WJK__
    @__WJK__ 4 роки тому +5

    Great video but in the long run... the initial low cost of a DIY unit will end up costing more than a retail unit, due to the unavoidable need to replenish the dry-ice, given dry ice is a consumable and can be pretty pricey in cetain markets :( The most cost-effective solution, of course, would be to find a used retail unit for cheap or (better yet) split the cost with someone/a group of ppl, to help lower the rather steep initial cost. On a side note/for what it's worth... many people forget that DIY & retail freeze dryers typically need to operate for many (many) hours, so depending on the water content of the particular food being freeze-dried, the freeze dryer may need to run for 12 hours, or more, which (unless one lives where electricity is cheap or they have a solar system) there's going to be a noticeable increase in one's electric bill when running a freeze dryer...the point being...it might be a lot less expensive to simply spend/invest the $3000-$5000 (plus food costs) on food that has already been freeze dried by a commercial company(?)

    • @tthtonekid
      @tthtonekid 11 місяців тому

      Dry ice is so cheap I think this would be great for home growers that only harvest a couple times a year

    • @noxplanationgaming
      @noxplanationgaming 2 місяці тому

      A pump like that is around 300-400 watts. A "home unit" by greenworks is 750 watts. So it costs less in that aspect. Secondly you don't need an astronomical amount of dry ice. Only about 6 dollars worth

  • @jonosterman2878
    @jonosterman2878 5 років тому +1

    I was wondering why not just use liquid nitrogen for your cryofluid? Did you just not want to buy a fancy dewer, or is there some other reason why liquid nitrogen isn't being used here?

  • @themousethatroared3559
    @themousethatroared3559 Рік тому +2

    love the video. is there something you can use in place of dry ice?

  • @edhernandez4344
    @edhernandez4344 5 років тому +3

    Wow only 6 to 14 hours
    AWESOME!!!

  • @step-hen7847
    @step-hen7847 10 місяців тому

    Wait I'm confused only the cold trap has to be cold? not the drying chamber or does the cold trap make the drying chamber cold?

  • @ITpanda
    @ITpanda 3 роки тому +1

    So many of your videos are in my projects playlist. Thanx for your awesome videos as always.

  • @mrkimpham
    @mrkimpham Рік тому

    I know this is 5 years later, but if I need to do vacuum steam distillation, can I use the same setup, but an induction burner to do 135 or so to boil off the water?

  • @u.s.militia7682
    @u.s.militia7682 4 роки тому +1

    How much did it cost and how many hours did it take to make this?

  • @RayanMufti
    @RayanMufti 4 роки тому

    Looking at the phase diagram, I have a question about temperature, why do we need to deeply the items that much? Wouldn’t regular household freezer temps be ok with -5 C° for example? As the line between 10 mBar and 1 mBar is crossed, water will sublimate. No?
    Second question is about the pump. Isn’t there a pump able to release water into the air without rusting? Of course the gas will turn to liquid water as soon as it leaves the pump and hit 1 Bar.

  • @arielkozak
    @arielkozak 5 років тому +1

    Can you use antifreeze instead of denatured alcohol?

  • @His-words
    @His-words 4 роки тому +1

    Thank you for your teaching. May I ask how much costed the material? N how many hrs do you need to make it? Thank you again.

  • @Pufflers
    @Pufflers 6 місяців тому

    Brilliant. Looking to make one, hopefully this gives me a better idea.

  • @markp8295
    @markp8295 5 років тому +8

    Wouldn't a Sprengel vacuum pump work?
    A simple pump is much cheaper to buy and run. Nerd rage built one for $50 and achieved with water and a 100psi pump almost the pressure you want.
    Changing to mineral oil or vacuum oil to improve performance further would mean you can boil off the water at sub 25C without the need to freeze the fruit. The water that comes off can be separated through a simple oil water trap made with a sheet of plastic. So you can cycle the same fluid around, and it doesn't require cooling. This would be lower investment cost and lower running cost.
    However I've not built or tested this, so I'd appreciate any information as to why this wouldn't work.

    • @xeigen2
      @xeigen2 5 років тому +3

      Do you mean a water aspirator pump? A Sprengel pump is what Cody's Lab made, it uses mercury falling through a small capillary tube to evacuate the air. It pumps far too slowly to do the job. However, as far as I can tell an aspirator pump will work. I found this paper images.peabody.yale.edu/lepsoc/jls/1970s/1976/1976-30(4)277-Hedges.pdf talking about doing exactly what you describe. The drying process was very slow using water as the working fluid but as you say, could be improved by using mineral or vacuum oil.

  • @ZirconGames
    @ZirconGames 7 років тому +81

    try to make some instant coffe

    • @thethoughtemporium
      @thethoughtemporium  7 років тому +41

      ooo good idea! will definitely give that a try

    • @johnsonmay3181
      @johnsonmay3181 7 років тому +4

      The Thought Emporium Be sure to write a paper describing the process!

    • @thecentralscrutinizer5105
      @thecentralscrutinizer5105 6 років тому

      worst tasting shit ever....yuckkk

    • @lordgarion514
      @lordgarion514 6 років тому +5

      @@thecentralscrutinizer5105
      You taste instant coffee made the old way, the new(er) way, or both?
      They used to spray it from the top of a tall tower and all the water evaporated on the way down. Now they use reverse osmosis to remove the water.
      I don't drink coffee, even expensive fresh coffee tastes like ass to me(but coffee smells amazing), but it's supposed to taste better the newer way.

    • @doraran2138
      @doraran2138 5 років тому +2

      Freeze dried coffee was marketed years ago by mainstream food companies.

  • @AWIERD1
    @AWIERD1 7 років тому +28

    Yikes, your micron gauge isn't made to be tightened with a pipe wrench and will likely rip the oring. Protip use some vacuum pump oil on the oring and hand tighten.

    • @thethoughtemporium
      @thethoughtemporium  7 років тому +10

      True, but also it was leaking. I was pretty gentle with the pipe wrench, though I realize I should've mentioned that.

    • @EricDalgetty
      @EricDalgetty 6 років тому +1

      Typically I would avoid adding any extra oil inside the chamber, it can offgas and keep the chamber from reaching a good vacuum

    • @AWIERD1
      @AWIERD1 6 років тому +3

      Eric Dalgetty Having a dry o-ring shred or just being dry would also cause leaks too so a little does go a long way. But you are right too so there's a balance...

    • @almosthuman4457
      @almosthuman4457 6 років тому +6

      Sterile petroleum jelly works better than pump oil.
      There's a product called petrol-gel intended for laboratory use.

  • @ryangodfrey4805
    @ryangodfrey4805 4 місяці тому

    I understand how you built everything but i have no idea if the drying chamber and water trap are tied together??? I really want to copy your set up but im a little lost on the whole water trap.. If anyone could explain to me what I'm missing I would greatly appreciate it!! Does the drying chamber just sit in the water trap?

  • @tigoda85
    @tigoda85 6 років тому

    one small point, don't use regular spray adhesive on polystyrene, the propellant and the solvent in in dissolves the polystyrene, same is true for a lot of plastics, you need the one that's specifically made for plastics though to pay through the nose for it

    • @billys.5580
      @billys.5580 6 років тому +1

      tigoda85, 3m brand super77 contains acetone, and that eats most foams. Yet if you take said adhesive and spray thin, light coat from a distance of 16 inches approximately on both surfaces to be bonded, it won't melt foam. Acetone evaporates before it reaches the surface. You'll tear the foam apart well before you tear the glue seam. Great adhesive for using a hotwire cutter on laminated foam

  • @joryclouthier
    @joryclouthier 3 роки тому +1

    pro tip always point your micron gauge up, water vapor will damage the sensor over time

  • @susansylvia2833
    @susansylvia2833 3 роки тому

    FYI TE, chamber links are dead now. Great project for preppers who can't afford a $2,400 - 5,000 freeze dry machine. There's only one on the market that I can find--maybe you should give them some competition! See if you can build a better unit for half the price. Maybe Shark Tank would invest! See? I gave you a new career just like that! haha

  • @Ralpha1961
    @Ralpha1961 3 роки тому

    Can you just freeze the food first in the refrigerator freezer before putting it in the vacuum? Saving all this mess?

  • @slikeklen2880
    @slikeklen2880 2 роки тому +1

    bro i just wanted to freeze dry raspberrys not end up building a rocket 😂 Jokes beside, great Video 👍

  • @chrisprice5806
    @chrisprice5806 2 роки тому +1

    Hi Thought Emporium, im gonna build a freeze dryer and i watcherd your video but i have a question: when the water sublimates off the food, does it travel thru the tube to the cold trap to condense as solid there or is that a secondary condenser with the primary collection of water happening inside the food holding vaccum chamber?
    im not sure if i need to keep a cold finger in the vaccum chamber with the food or not.

  • @ytkdmr
    @ytkdmr 3 роки тому +1

    What if you dehydrate without freezing ? Just put them into vacuum chamber and thats all. Compare thoose two please.

    • @ytkdmr
      @ytkdmr 3 роки тому

      @@trevorfichtner3539 How long did it took to freeze dry food in that chamber ?

  • @mj2906
    @mj2906 5 років тому +1

    Quick question: maybe I missed some clue but why you using dray ice - do you really need so low temperature? I would expect that frizzing samples and keeping below 0 centigrade would be enough and also most energy efficient as I would expect the higher ratio of sublimation just below 0 then in -40

    • @lockonjunkie
      @lockonjunkie 5 років тому +1

      Unfortunately not. For Lyophilisation, you need very low temperatures so your products don't collapse or even melt. It's a science by itself.

    • @johnwang9914
      @johnwang9914 5 років тому +1

      Actually the sublimation line exists below the triple point so you just need to keep the food cooler than 0.16C. However you do need a margin so that no part of the food reaches the triple point. Indeed, at higher temperatures less of a vacuum would be needed. However texture and quality can be improved by what's called IQF which stands for Individual Quick Freezing. Dry ice would be good for IQF. I think this DIY'er made it harder on himself by insisting on such a low temperature and extreme vacuum. The phase charts for water suggests that such extremes are not needed and indeed historically the ancient Incans freeze dried foods by climbing mountains and leaving the foods exposed at the summits.
      Commercial freeze dryers actually heat the product after the vacuum has been applied.

  • @bryson502
    @bryson502 3 роки тому

    I'm wondering if this to be made out of scrap parts like using freezer compressors maybe several of them to make this on a bigger scale

  • @miah2504
    @miah2504 4 роки тому +1

    Could frame out around your pot and then use spray foam (just an idea from the hive mind)

  • @bryancushman7106
    @bryancushman7106 2 роки тому

    A 2 stage rotary vacuum pump that is 1hp 8cfm and has an ultimate vacuum of 0.3Pa should work well right?

  • @chrisharrison3245
    @chrisharrison3245 3 роки тому

    how would you know if the freeze drying process is complete without any sort of sensor and what is the max vacuum i should use for foods

  • @Hitech82
    @Hitech82 3 роки тому

    I wonder how it would work drying cannibus?

  • @Draakdarkmaster6
    @Draakdarkmaster6 7 років тому +1

    huh... its much easier than i thought it would be, this was helpful.

  • @nathantron
    @nathantron 4 роки тому +3

    Soldering Iron + Paperclip makes a good foam cutter btw.

  • @michaellaw5801
    @michaellaw5801 3 роки тому

    Can anyone help me out with this? Do you put anything inside the cold trap or does it stays empty? Is that where you freeze the food or does the food has to be frozen first?

  • @hammadafzal4103
    @hammadafzal4103 2 роки тому

    Seems like alot of the links from parts list are to expired postings?
    Any chance you could update with a fresh recommendations when you get a chance please?

  • @scottiedaghost
    @scottiedaghost 3 роки тому

    This was very helpful

  • @jerrysmith372
    @jerrysmith372 4 роки тому

    RRRRIIIGGGHHHHTTTTT. LOL I simply bought a Harvest Right home freeze dryer back in Dec 2081 - I run it almost 24/7 and have processed a lot of foods for long term storage. Compared to buying commercially produced FD foods - my dryer has paid for itself many times over. It will also process up to 20 pounds of foods in a single batch.
    Good luck with your DYI dryer.

  • @ttelgrande
    @ttelgrande 16 днів тому

    so I find that I can buy a -40 degree 3.5 cu ft freezer for around $300. would that be useful in this setup?

  • @angelmendez6353
    @angelmendez6353 2 роки тому

    I'm thinking in craft a 1 cubic meter box and get a cooling system from a cooler and install it on it, make a hole and there connect the vacuum to low the pressure so I can keep frozen all that food inside the drying chamber, but I see the really problem is the refrigerant chamber that has to be as cool as it cans

  • @jonosterman2878
    @jonosterman2878 5 років тому

    Can you use a pump that does not take down to full vac? I have an old Gast diaphram pump that only pulls around -21, no matter what I do to the system. Would this work or should I just use a cheap rotary vane? I just don't like those rotary vane pumps with the oil.