US Blanks have a
general surfboard rocker and outline. You will need to cut an outline with
all blanks that we sell.  When selecting a US Blank you should try
to find a blank that fits the dimensions of the board you are trying to
shape.  US blanks are a close tolerance blank which mean that the
outer part of the blank is the strongest foam and as you get closer to the
center the foam will get softer, which makes blank selection critical to the
strength of your surfboard.