Opportunity is missed by most people because it is dressed in overalls and looks like work. - Thomas Edison
Tried a bunch of things in here including a dry vac and window squeegee and clean, plentiful, compressed air wins. You'll need an additional coalescing filter but it's worth the small cost to get air in your coating/resolving/degreasing area. Bonus benefit that wound up being huge for us- hitting degreased, dried screens with air before coating. Eliminates a lot of errant pinhole issue that are not chem/back spray related. In my recent search for a better air gun for this I found these, in case it's helpful. High flow and wide patterns, looks good:http://www.amazon.com/Vacula-VAC112100450-MultiFLOW-Blow-Fluid/dp/B005257QYG#productDetailshttp://www.mcmaster.com/#blowguns/=pqgdzg
I semi-joked with Mimosa about coming up with plans for one, but at $9, unless someone knows of a negative, something like the floor squeegee/sucker that TCT got makes the PVC fittings and the labor involved seem less practical. It would have to be, like some of Mimosa's and other's projects, done as a labor of love.* I'm waiting for the first post of someone complaining that they got one, and the first time they tried it, it messed up the screen, and clogged with emulsion.
A bit of a tangent, but I would LOVE a DIY subsection on the forum. I probably have 10 or 15 well documented DIY projects related to printing. Everything from the drying cabinet I linked earlier in this thread, to squeegee racks, to small modifications or self made tools that help with standard processes. I would be happy to share and get feedback, and of course see what others have done. I know things like Alan's reverse engineered and modified tri-loc would fit right into a subforum like that.
I mounted one of my old windshield wipers to a handle....fits perfectly inside the 23 31 screen...one quick pass on each side and then in front of a fan, 5 minutes or so....