I have a question though, will it be fine to tie (or thread) the hose into my headband if I tie my hair up, instead of taping it to the bag? Any suggestions and reminders are welcome.
Sorry I'm a bit late to this... Your setup looks similar to mine. I built mine from a book I can highly recommend (and cited in the Wiki) called
Five Last Acts – The Exit Path (2015 edition): The arts and science of rational suicide in the face of unbearable, unrelievable suffering 2nd Edition by Chris Docker. He spends 124 pages on the chapter "Helium & inert gas" and it is
very well written.
I'd be interested in hearing where you got your instructions...?
Is your hose/tube long enough (it looks kinda short in the pic)? With inert gasses, it's possible for there to be some minor bodily tremors/shaking after unconsciousness (really the only disadvantage I see of the method). You don't want the hose to come loose at either end... so make sure everything is secure and, e.g., your bottle can't get knocked over.
I think the key thing is that the hose/tube is ~high up in the bag and secure. If it were to fall down during the process, that would not be ideal. Can you make sure it'll stay secure attached to your hair?
Also, it's best to squeeze all the regular air out of the bag and strongly exhale: At the beginning, you want to try to get much of the oxygen & carbon dioxide out of the bag/your lungs that you can (makes it quicker & more comfortable).
Is your flowmeter calibrated to Argon? What flow rate (center of the ball) do you intend to use?
I wish you wellness!