Building an O2 concentrator for welding and vacuum tube work

accompanying video: <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=lB3hHk1_2V0&amp;t=97s" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=lB3hHk1_2V0&amp;t=97s</a>

Cool idea. I would be interested in knowing the concentration you achieve and flow rates (LPM&#x2F;CFH). This wouldn&#x27;t work in my workshop as we don&#x27;t treat our equipment nicely enough and we don&#x27;t have sparkies to tend to it.

I wonder how this performs compared to the cheap concentrators you can get off ebay.

Interesting, but why did the original poster link to part 2 of the thing?