Looking for air dryer

What’s everyone using for dry air?

This one is working very well, needs no electricity, always runs and can be built for $100 or so.
I don’t imagine it would be great for a commercial operation but for a.hobbyist it works very well. I also have a motor guard dryer behind it.

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Thank u I like I might just consider this set up

I’m planning on building one like above for my shop this weekend… Will let you all know how it goes and, if I can take it, even pay attention to how much it costs me…LOL

The most expensive part is the valves, the rest is cheap.
One mistake I made was I used type k copper tube. HD has both types and I wanted the best. Turns out the L is thinner and is better to cool the air as it passes through. Who knew? Be sure to build it correctly, some guys built them with one valve and they don’t do the job, each run has to have a valve. The air has to flow through every length of pipe without a shortcut. There are some good tips on plasma spider. Reflecting on it I think I spent close to $150 on it.