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WOOD_02

 
this animation was created to show the quarter sewing process
free from the distraction the complex equipment
require in white and red oak
quartersawn has a great deal to do
visually with the geometric relationship between the growth rings
and the mitchell et raise
which emanate from the center the log like the spokes of a wheel
all trees have these rays but in red and white oak their most pronounced
allowing for the visual separation between quartered
and rift in the quarter signing process the loggers first cut in half
and that half his move to a staging area to be cut in the quarters later
half log left on the head saw carriage is cut into quarters
these quarters are then cut into boards
we've inserted this graphic to indicate the boards being cut
the growth rings in the first board are in approximately 60 to 90 degrees to the
face of the port
in this board you can see that the metallurgy rays are very visible
this board will be classified as cornered when we start with a 19 inch
diameter log
these first boards the cord boards are an average with
have 6.5 inches as we're cutting the log from the inside
out the next step becomes cutting the second face without changing the
orientation
have the band saw blade this is achieved by turning the corner login for and
and flipping it with a push bar if we are cutting four-quarter
a one-inch boards this next faces 1.3 inches now worry than the first board
due to the thickness of the first board and the saw blade however
the growth rings are still approximately 60 to 90 degrees to the face of the board
thus revealing the metal a raise in the same way
in general when the growth rings or 60 to 90 degrees to the face to the board
in white and red oak
the board will be classified as quarter the process continues
slicing alternate faces the corner log with each slice
not only are the boards getting an hour but the angle the growth rings to the
face in the board is becoming sharper
as the angle changes from 60 to 90 degrees
to 30 to 60 degrees the mitchell et raise our appeal to a lesser degree
they're still there just less visible these
now we're less figured boards are called rift
all the boards will share the same straight grained visual characteristic
this board is straight grain and shows almost no flick
but that can be deceptive rift boards can still show figure
and bacall drift the average rift borden by the red oak is 4.5 inches with growth
rings at an angle of 30 to 60 degrees to the face of the board
remember that we always course all logs from the inside out
requiring a higher quality log to produce the fine quartersawn number
for which Frank Miller has become famous
 

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