I was trying to find a recipe I could use to produce a chemical reaction for the Mad Scientist contest and the chemical reaction contest. I came across this one and thought is was interesting. For this tutorial I will be making Plastic milk.

Step 1: Recipe

Recipe ingredients:
  • 2 Cups Milk
  • 2 Tablespoons white vinegar
This recipe came from here: http://www.youtube.com/watch?v=pIvAl4lu1uA.

It is very helpful to view this video so you can see the process of making plastic milk.

It is a quick and easy project.
<p>why is it not edible ??</p>
It is very very hard like plastic. It probably would not taste good at all. I hope this helps. Have a great day!<br>sunshiine~
<p>What this really is is cheese...</p>
This recipe is false, but with a spoon of caustic soda, this recipe became a real plastic, the galatite.
<p>Ok so I'm curious. If you start with milk, and add vinegar then remove the casein, what do you have left? Is it still milk? Or milky vinegar? Or something new altogether?</p>
Hmmm, the best I can describe it would be a jell-0 type of substance that is not completely set up. It is still very soft and mushy but as it dries it firms up. At this point one could not make a shape from it because it will not hold. Hope this helps. Thanks so much for stopping by and do have a splendorous day.<br>sunshiine
Then, I looked at this instructible and saw what I did wrong. Thank you!!
OMG I remember doing this in a science after school program! Mine turned out like feta cheese.. :)
<p>Yes, it is a lot like feta cheese but if I recall I kneaded it a little to form a ball. Thanks for stopping by and commenting and do have a great weekend.</p><p>sunshiine </p>
<p>Is it edible? Just asking...</p>
No it is not edible. Thanks for stopping by and have a great day.<br>sunshiine
<p>Oh. Thanks in advance.</p>
<p>You welcome.</p>
This molds and gets pretty gross after a while. :P <br>
and when it grows mold it STINKS!!!
<p>Thanks for commenting but I have had mine for over a year and it has not molded. Weather may be a factor as I live in a dry climate. </p>
thanks alot ghys i really liked it this is for my scince project <br>THANKS SUNSHINNE <br>
with this, are you able to finely sand the pieces if you want to?
I have not tried that but I would think you could. What is difficult is molding the pieces because it does not stick together like clay. I only made these one time. Maybe adding something that would stick to the milk better so you could mold it more smoothly? It doesn't hurt to try different methods. I hope this helps! I enjoyed making these! Thanks for asking and do have a splendorous day! <br>sunshiine
Woohoo for the cross!
Thanks for stopping by and commenting! Have a splendorous day! <br>sunshiine
Thanks! By the way, your name reminded me of a song: <br>Thousand Foot Krutch- Sunshyne <br>http://www.youtube.com/watch?v=_3n-gZ37JkE
Checked out the song! Thanks so much for sharing! <br>sunshiine
Can yuo tuoch the plastic to molde it?
Maybe if you allow it to dry a while because this is not as firm as clay. I hope this helps and thanks for commenting! <br>Sunshiine
Hi, Sunshine, Congrats on being a runner up winner! I was wondering if you can use expired milk? I have some in the fridge right now that ruined my morning coffee, but I thought that since there is quite a bit left to make some plastic from it.
I forgot, I think the best way to do this is just follow the instructions. I was thinking your milk was clumpy already but no, just follow these instructions and it should be fine. Sunshiine
Thanks, I will give it a try and let you know how it turns out!
It worked fine. Once I started heating the milk it already began to separate. I still added the vinegar though. I was worried that it might be stinky but it didn't smell very much and once it dried, it didn't smell at all.
Hi CHRYsN! I am pretty sure that will work. Just follow the directions except omit the vinegar. Please let me know how it turned out if you make it and I will add that information to my instructable. I just don't see why it wouldn't work. Have a great day and thanks for stopping by! Sunshiine
Congrats! I noticed that you also wanted to paint what you create, I wonder if the paint made from milk would adhere to itself? http://en.wikipedia.org/wiki/Casein_paint
Might be worth a try! Thanks for sharing!
Possibly before the plastic dried?
In reading through many of the comments, I didn't see anything regarding the smell. I am thinking about doing this for a scientific art project for kids, but want to avoid a room full of drying expiring milk stench. How stinky is it when it dries?
I apologize for not answering this question sooner but my PC died. I would think it might be offensive if you had 30 of them but thought of a possible solution. Perhaps drying them in sand covered in a box with air holes at the top might work. A simple experiment might be worth it. Thanks for commenting and have a nice day! <br>Sunshiine
Can you speed up the drying process by heating/cooling the plastic?
I am sorry it took so long to answer this question. My Pc died. I would think a fan blowing on it or heated in the oven might help. I am sorry I can't answer your question better. Thanks for commenting and have a nice day! <br>Sunshiine
Ok, for all of you who don't know what you're talking about, this is not cheese. there is a chemical called casein within milk which is very similar to the long polymers in plastics you see today. once formed it makes A knid of plastic called galalith: http://en.wikipedia.org/wiki/Galalith , so yes this is a real plastic.
Casein has lots of uses, from glue to paint to plastic AND cheese. Cheese is produced by coagulation of casein http://en.wikipedia.org/wiki/Casein. Paneer, an Indian cheese, really is made in this fashion, they do not use rennet or anything else to solidify the casein, like most cheeses are. They just acidify and separate the milk, pull off the curds aka casein and flatten and fry and go! Very tasty I might add.<br><br>
Thanks for the information! I appreciate your comment!<br>Sunshiine
Woot-woot-woot! Congrats on making the finals!!! I'll be pulling for you!!!
Thanks friend! Have a bajablue kind of a day!<br>sunshiine
this is just dried out Paneer, an indian cheese <br> <br>http://en.wikipedia.org/wiki/Paneer
Thanks for sharing! Have a super day!<br>Sunshiine
I've been looking for some type of plastic or rubber like handle/grip for some of my homemade knives. Would this be strong enough and durable enough to work and would it be able to stand up to repeated use?
I have not forgotten you! My plastic may take another day to dry. I have posted some pictures on my page to show shrinkage that might interest you though. I will get back to you, promise. Sweet dreams!<br>Sunshiine

About This Instructable


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Bio: I am married with two children. Spring, summer, and fall are my very favorite times of the year. I love the sunshine thus the reason ... More »
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