Originally Posted by Ted
The displaced air will be pulsing out and in, you could put a hole in the cover plate and epoxy a copper 90 deg. fitting and add a length of tubing with a open cell filter at the end, the copper would keep the steam engine look and let the engine breath,,,just a thought.
I like that idea. I wonder what sort of filter would fit on the end of a piece of 1/2" copper pipe? Like I said, I can probably find a grommet to make something fit, but is there a really small filter out there? I've been looking at some differential breather filters but haven't found anything suitable yet.