3.
4.
5.
6.
Step 4. Determine Required CFM of
Each Machine
Figure
Figure 37.
Machine
Dust Port Size
Approximate
Required CFM
2" 98
2.5" 150
3" 220
4" 395
5" 614
6" 884
7" 1203
8" 1570
9" 1990
10" 2456
Figure 38.
Machine Average Dust Port Size
Table Saw ......................................................4"
Miter/Radial-Arm Saw ....................................2"
Jointer (6" and smaller) .................................4"
Jointer (8"-12") ...............................................5"
Thickness Planer (13" and smaller) ...............4"
Thickness Planer (14"-20") ............................6"
Shaper ...........................................................4"
Router (mounted to table) ..............................2"
Bandsaw ........................................................4"
Lathe ..............................................................4"
Disc Sander (12" and smaller) .......................2"
Disc Sander (13-18") ......................................4"
Belt Sander (6" and smaller) .........................2"
Belt Sander (7"-9") ........................................3"
Edge Sander (6" x 80" and smaller) ..............4"
Edge Sander (6" x 80" and larger) ................5"
Drum Sander (24" and smaller) ...............2 x 4"
Drum Sander (24" and larger) .................4 x 4"
Widebelt Sander (18" and smaller) ................5"
Widebelt Sander (24"-37" single head) ...2 x 6"
Widebelt Sander (24"-51" double head) ..5 x 4"
Figure 39.
395
395
614
790395
220
98
Table Saw
Planer/
Moulder
Miter
Saw
Jointer
Sander
PlanerShaper
Dust
Collector
Write the required CFM for each machine on your
sketch, as shown in the figure below.
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