"Thomas Bunetta" wrote in message
...
The air moving past the blades gets "chopped" similar to how an old
fashioned siren (rotary) works. There is a substantial sound level
difference on my planer as well when I pull the DC line off.
The bottom line is if you cut back too much on the DC, you'll start having
chip imprints in the wood.
Tom



True on lunchbox types, but this is an iron one. I own the grandfather of
his and it works remarkably well without collection, because it has that
chip breaker inside.