I know we’ve got a lot of backwoods and rural users on here, I thought this might be a handy solution for making your own dry ice. All you need is a co2 tank, this penguin adapter and a couple minutes of your time. Thread on Penguin adapter, turn on co2 and voila you’ll have dry ice in about 60 seconds.
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How would it compare cost/efficiency wise to buying cubes?
Let’s just say at your local market rate for both?
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6yrs ago someone did this trick. It was more cost effective to buy di vs make it with the “sock”.
It may have been around d the times on grow forums with the ole (I said OLE not old!) @Graywolf made this discovery.
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Mind you…
I need to drive 40 min each way to buy DI. And lose at least 50% of my dry ice to evaporation in an average purchase.
If I made it only when I needed it (SPD cold trap), as long as this is at least half as efficient as buying it…
It’s probably smart for me to get one.
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So a pound of dry ice is equal to 8.8 cubic feet of co2. A 50lb tank holds 440 cubic feet which means at perfect efficiency one could get 50 lbs of dry ice out. Lets assume a 25% loss to off-gassing during the creation of the dry ice. That means we’re sitting at 37.5 lbs of dry ice per 50lb co2 tank. I’m sure the convenience and price point will appeal to a few folks round here 
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I’d rather not though.
I’m curious myself what kind of losses are observed.
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This is great, the closest place I can get dry ice is 3.5 hours away, I’m going to try this I already have a big c02 tank and my welding shop.
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Might as well try liquid withdraw?
See the efficiency of these ones.
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Seems like we’re getting a 20-30% efficiency?
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These things really suck. In my experience if you get even 10% you’ll be lucky
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A lot of us need 100-200lbs min to begin a days work…some more.
The co2 comes from the same joint as the dry ice. Gotta go there one way or another…might as well save all that work. May be useful for those just feeding an spd cold trap at home u guess?
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Looks like a shit ton of loss out of the sock… I get the 10% at best…
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For dry ice in the U.K. I was quoted £30 for 5kg
This is why I will resort to using ice cubes.
for all w dry ice evaporating problems get a knock off yeti and wrap it in 2 quailts or sleeping bags. Ur shit will last much much longer
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If your using it for a cold trap, spend the money on an immersion chiller, it is more than worth. Unless your only doing a few runs it pays for its self in paper and time quickly
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