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submitted 3 days ago* (last edited 3 days ago) by quandang@lemmy.world to c/diy@slrpnk.net

inside look Made from a big water bottle wrapped in several layers of cardboard. The whole thing is covered with brown paper, which makes the surface harder and look nicer.

the lid fitting the lid on the container The lid is made from 4 layers of cardboard and trimmed to tightly fit the container. When used, it's covered in a plastic bag for waterproofing

Shaping cardboard to tight tolerances is pretty easy: when dry it is suprisingly stiff; you can cleanly saw it through with a serrated knife, even at tiny shallow angles. You can also add more layers of paper to make it thicker.

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[-] enchanted@lemmy.world 12 points 3 days ago

Is this to conserve electricity? I don't understand why it needs insulating, mine can handle gallons of water uninsulated.

[-] quandang@lemmy.world 10 points 3 days ago

Yes, it's to prevent heat loss and water loss. I just feel that an insulated container would lose a lot of heat over the hours of cooking.

[-] treadful@lemmy.zip 5 points 3 days ago

What are you heating in this contraption?

[-] quandang@lemmy.world 5 points 3 days ago

Sous vide bags containing the food I want to cook

[-] treadful@lemmy.zip 3 points 3 days ago

Do you plan on running it outdoors in the winter or something?

[-] Jajcus@sh.itjust.works 9 points 3 days ago

When cooking for hours it makes big difference if you are using tens of watts of energy or hundreds. And even in summer you would rather not want to heat your room together with the food.

[-] HerbGrower@slrpnk.net 3 points 2 days ago

I would be pretty interested to know how much of a difference it ends up making after a long time in total energy usage. Could make a nice thick shell.

[-] HerbGrower@slrpnk.net 3 points 3 days ago

I have a sudden desire to turn my 21L steel stockpot into an extremely large insulated slow cooker.

Previously thought of using a straw box or similar where you heat it and then stick it in the box and seal it up and just leave it.

Now I just need to find enough people to eat up to 21L of stew or curry.

[-] quandang@lemmy.world 3 points 3 days ago

I did think of insulating my big pot too, but I don't use it very much. One time I made a big pot of spaghetti sauce for freezing and now I still haven't finished eating it.

[-] HerbGrower@slrpnk.net 3 points 3 days ago

Yeah there is that too, would need a lot of freezer tubs. I also don't have space for a microwave to reheat them. Some stuff could go in the air fryer, or a saucepan.

My partner really doesn't like eating stuff that has been frozen though. I think she gets it from her parents, they are really funny about it for some reason. They appear to think "best before" means "toxic after".

this post was submitted on 13 Sep 2026
83 points (95.6% liked)

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