This is an interactive application for wood grading reflecting the NHLA rules. We are showing a board with defects; your goal is to add cuts to yield the necessary cutting units and achieve the desired grade. If you need some help with the interface, click here to view some tips.

You can resize and reposition each clear cut using the mouse.
To reveal the defect type and its size, hover with the mouse over it.
The "add cut" button from the "cuts" panel, adds the maximum-area clear cut available to the board.
The "snap to min. cut size" toggle (from the "Cuts" panel) allows you to easily fit cuts that have exactly the minimum cut size along a dimension.

Board

show first lineal regions

expected grade:
predicted grade:
board size:
measured width:
surface measure (SM):

Grade

min. board size:
min. cut size:
required cutting units:

defect limits:

defect	description	value	limit	valid

Note: All values from the table are in inches.

first lineal rule:

clear sound unsound valid

Note: Percentage of clear, sound and unsound wood for each of the two first lineal regions.

Cuts

snap to min. cut size

id	rect.	width (in)	length (ft)	cut units	delete

total cutting units: 0

elapsed time:

NHLA Grading Tool

Board

Grade

Cuts