Cutting Grades

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Cutting Grades

This chart defines what types of defects* will be allowed in a solid wood part based on the grade assigned to the part. These grades have been developed by TDH for use in establishing inspection criteria within our company and to give our customers a somewhat quantitative method to determine what the end product will look like. These grades do not relate in any way to standard lumber grading rules.

GRADES
DEFECT	CLEAR	#1	#2	SOUND
Machining Defects	None	Very slight grain tear. Slight chatter. Visible cutter marks	Medium grain tear. Medium chatter. Easily visible cutter marks.	Skip, Tear out, No Limit
Knots	¼" dia. maximum. No holes or cracks No rot	½" dia. maximum, solid slight crack OK	1" dia. maximum solid cracks. Small holes OK.	NAD
Splits Checks	None	None on good face. Small on back face.	One small on good face. Several medium on back face.	NAD
Mineral Streaks	Few and light in color	Small on good face. Medium on back face.	Medium on good face. NAD other face.	NAD
Color	Uniform	Relatively uniform	NAD	NAD
Typical Uses	High end visible parts used with stain and clear topcoats	Painted/stained only. Clearcoat only, less visible parts.	Internal structural parts. Strength more important than looks.	Crates, Filler Blocks, Non Visible Parts


	NAD = Not a defect * "Defects" is a term used by the wood industry to identify all types of characteristics and flaws in lumber. It does not mean that a give piece of lumber is defective.

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