Sorry for the delayed reply, work's been keeping me busy.
I won't be torching much on it, as it will be at my parent's house. Maybe an hour or two a week until I get a house of my own. But after that as much as I can~
I was planning to built my hood either of sheet steel or aluminum, depending on what I can find cheaply.
I've been talking to my mechanical engineer friend about building an oxygen concentrator and he thinks we can do it. I also found reasonably priced zeolite in 1 lb quantities. If i end up going that route I'll try to document the process.
Thanks,
~Haka
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