My application is for a baffle is hooked to a DeWalt 735 planer - which has a built-in sawdust extraction fan. After trying out a "cyclone" lid - which was a joke - I built a baffle for my 30 gallon collection bin. As expected, it works great! ;D
A couple modifications were necessary: First, this uses 4" hose and fittings. Second, this configuration is downstream of the fan, so the container is pressurized. This requires that I secure the lid to the bin with bungee cords, plus I added some weatherstripping and clamps to seal the joint.
(http://home.san.rr.com/jeffnann/WoodWorking/Shop/PlanerStand/SawdustCollector.JPG)
Inside view:
(http://home.san.rr.com/jeffnann/WoodWorking/Shop/PlanerStand/PhilThienBaffle.JPG)
Just thought you might like to see another application of your idea.
URL of my webpage with link - http://home.san.rr.com/jeffnann/WoodWorking/Shop/Shop.html#Planer_Stand (http://home.san.rr.com/jeffnann/WoodWorking/Shop/Shop.html#Planer_Stand)
Update because ISP changed servers on me - http://home.roadrunner.com/~jeffnann/WoodWorking/Shop/Shop.html#Planer_Stand_
(http://home.roadrunner.com/~jeffnann/WoodWorking/Shop/PlanerStand/SawdustCollector.JPG)
Inside view:
(http://home.roadrunner.com/~jeffnann/WoodWorking/Shop/PlanerStand/PhilThienBaffle.JPG)
New website address:
http://home.roadrunner.com/~jeffnann/WoodWorking/Shop/Shop.html#Planer_Stand_
I like your bungee cord over t he wood block idea!