Poor Man's Rebreather Kit

[Adrian]

This is my 9 dollars CO2 (five liters plastic bottle width a litle hole) breathe through the nose

 

[LukeL]

@Adrian can you put up a link to the parts?

 

[Such_Saturation]

This is my 9 dollars CO2 (five liters plastic bottle width a litle hole) breathe through the noseView attachment 3830

You must also block the exit valve on the mask x)

 

[Adrian]

Yes, with paper tape cover two holes and the third remove the valve.

 

[Such_Saturation]

Yes, with paper tape cover two holes and the third remove the valve.

Is it possible to block it closed?

 

[Adrian]

Is it possible to block it closed?

Yes it is easy with paper tape

 

[Adrian]

Is it possible to block it closed?

If you want I publish photos with details

 

[Such_Saturation]

If you want I publish photos with details

I will try. I have the same mask!

 

[Greg says]

@Adrian can you please post a list of parts required and maybe a couple more photos.

 

[Adrian]

@Adrian can you please post a list of parts required and maybe a couple more photos.

I hope it is useful.

 

[Greg says]

I hope it is useful.

wow ... thanks for this Adrian. What is the mouth piece called ?

 

[Adrian]

wow ... thanks for this Adrian. What is the mouth piece called ?

reusable Respirator Painting Spraying half Face/Gas Mask

gas mask 3m | eBay

 

[haidut]

This works better than a bag and doesn't fill your lungs with that lovely plastic smell. You need two empty bottles and a pair of scissors. Adjust the distance between the bottles until you can obtain a comfortable concentration of carbon dioxide and oxygen. (Inspired by Ray Peat for saying that people with longer noses retain more CO2).

View attachment 3311

I didn't see this mention in the thread...but why not just use 1 bottle instead of two and simply cut a hole the size of a quarter into the bottom of the bottle and use the top opening as the breathing part. No need to cut two bottles and stiwch/glue them together somehow. Also, in the US you can but water in a 1 gallon bottles that are bigger even then the 2 bottles when glued together. So, if you use one of these you would eventually be breathing into/from a 1 gallon tank filled with mostly CO2. Am I missing some obvious mistake here that would prevent this from working as well?

 

[Such_Saturation]

Well it's hard to cut the bottom of bottles, especially holes exactly the size of the top

 

[haidut]

Well it's hard to cut the bottom of bottles, especially holes exactly the size of the top

Sure, but it does not have to be exact right? About the same size would do I assume. I can gut the bottom pretty easily in perfect round shape using heated screwdriver or another or a solder device.

 

[tara]

So, if you use one of these you would eventually be breathing into/from a 1 gallon tank filled with mostly CO2. Am I missing some obvious mistake here that would prevent this from working as well?

I don't believe the tank would be mostly CO2, fortunately, because that would have the downside of being lethal quite quickly (possible LD ~9% for 5 mins).

I would expect the nitrogen to remain at nearly 80%, and the oxygen to decrease from around 20%. After breathing in it for a while, the CO2 would climb from atmospheric 0.04% (or maybe up to 10 times that if in a poorly ventilated space) and may reach a level of maybe 1-5%, at which level the CO2 would probably be making quite a difference to internal CO2 levels. Depending on personal CO2 set point and tolerance, it may or may not get too high for comfort (and the O2 may or may not get too low for comfort). Depending on the current state, the discomfort could arise from either the high CO2 or the lowered O2. A mild feeling of air hunger may be useful or necessary to get CO2 conditioning the benefits, but strong discomfort can probably not be assumed to be safe for long.

 

[Such_Saturation]

Sure, but it does not have to be exact right? About the same size would do I assume. I can gut the bottom pretty easily in perfect round shape using heated screwdriver or another or a solder device.

You only need scissors for this

 

[Adrian]

I don't believe the tank would be mostly CO2, fortunately, because that would have the downside of being lethal quite quickly (possible LD ~9% for 5 mins).

I would expect the nitrogen to remain at nearly 80%, and the oxygen to decrease from around 20%. After breathing in it for a while, the CO2 would climb from atmospheric 0.04% (or maybe up to 10 times that if in a poorly ventilated space) and may reach a level of maybe 1-5%, at which level the CO2 would probably be making quite a difference to internal CO2 levels. Depending on personal CO2 set point and tolerance, it may or may not get too high for comfort (and the O2 may or may not get too low for comfort). Depending on the current state, the discomfort could arise from either the high CO2 or the lowered O2. A mild feeling of air hunger may be useful or necessary to get CO2 conditioning the benefits, but strong discomfort can probably not be assumed to be safe for long.

I am using a 1.3 gallon device, for a period of two hours (when watching a movie on TV) and I feel great.

 

[tara]

I am using a 1.3 gallon device, for a period of two hours (when watching a movie on TV) and I feel great.

Nice. Any sense of air hunger? When you say you feel great, do you mean you feel better during or after the 2 hrs?

 

[Amazoniac]

What about getting unconscious from overdoing it? Should we open a parallel thread condemning elastic bands for murder?