Dust collection gate

Simple design for shop vacuum spreader. 

Key notes:

• The gate itself doesn't have to be attached to the chamber. When vacuum starts it should be well sucked down.
• Because the gate isn't attached it can be easily taken off and clean when vacuum doesn't work
• All models are configurable. Please open uploaded FreeCAD project and explore.
• Initially it is designed to attach Festool hoses, you can change diameters in the project.

Please note that models saved in FreeCAD project lack any chamfers/fillets to be nice to touch. Because I found them quite conflict-prone with parametric parts. You can add them after you adjust parts for you needs.