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Avoid inferior metal duct that requires you to cut it to length and snap it together. This type of duct is time consuming to install because it requires you to seal all the seams with silicone and screw the components on the ends with sheet metal screws. Another disadvantage is the rough internal seams and crimped ends that unavoidably increase
static pressure.
Figure 10. Examples of metal pipe and
components.
Plastic Duct
Plastic duct is also a popular material for home shops. One problem with using plastic is that it is less efficient per foot than metal. The popularity of plastic duct is due to the fact that it is an economi- cal and readily available product. It is also simple to assemble and easily sealed against air loss. The primary disadvantage of plastic duct for dust collection is the inherent danger of static electrical
correctly grounded.
Figure 11. Plastic duct and components. G5954 5HP Dust Collector
Flexible Duct
Flexible hose is generally used for short runs, small shops and at rigid