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RE: Grit of wood using a Planer7/9
Can a piece of wood, whether it be red oak or gum, be tested for smoothness coming thru a 2-foot planer
In other words, how do we know what finished grit would be the finish from a planer? Is there a testing tool?
I guess you can count knife marks per inch?
Grit is from a sanding machine.
KCPI (knife cuts per inch) is from a planer.
The two do not compare directly.
You are probably thinking of what grit you should start sanding with. That depends on what kind of sanding equipment you have.
Are we possibly talking about an abrasive planer?
Planer finish is calculated in Knife Marks Per Inch. Have a look at the link below from Mirror Reflections. This explains it all.
Mirror Reflections - Knife Marks Per Inch