[Otto Nobedder]

On several things at work, I use the cut-to-fit replacement AC filters screens, the molded plastic ones. They hold up quite well, and are easily washed. They catch remarkably fine dust for the apparent pore size, and are bright white so the color change tells you when they're dirty.

This stuff:
http://www.homedepot.com/p/AC-Safe-Fact ... /100150627
Cut to fit. I simply have it taped to some of the stuff I don't have time to build a frame for.

A shot of end-dust spray after cleaning helps, too.

Steve S

[AndersK]

Actually they make a silicone based dielectric spray you can put on boards and contractors in dirty environments.

I should have written electro mechanical instead of electronics in general. Silicone does bad things to relays and other mechanical contact tips.

[Poland308]

Different brand than I use but same kinda stuff.
https://www.amazon.com/MG-Chemicals-Sil ... B008O9YGQI

I use something like this even on the contactors inside mechanical equipment that's at a coal fire power plant. Some of it is exposed to the fine coal dust to the point the dust piles up inside everything. It's down wind of the coal pile.

[tonij]

I'd like to see this with a visual indicator for when it's not flowing enough - similar to what is found on a Diesel engine system.

Biggest problem I see is it can't be a paper element - sparks could light it up.

Some type of air flow meter gauge would be very cool to have as a feature.

I did a sort of crude air flow test on my machine.
I stuck a small strip of paper next to the air vents to act as a needle indicator.
I removed my machines rear plastic cover so the fan is fully exposed and marked the angle of the paper then compared that to when the cover was back on and there was in my opinion a pretty significant reduction in airflow not to mention increase in noise just from its own cover...