Challenge JF Instructions And Parts Manual page 19

Install the rear gage filler block on the right side of the
backgage.
Install the cornering attachment bracket as follows:
When using the cornering knives, the knife holder
socket screw should face the rear of the machine; this
puts the bracket mounting holes in the rear position
and centers the knife on the cutting block.
When using the straight diagonal knife, the bracket is
reversed, with the holder socket screw facing the
operator. The holder mounting screws are then in the
forward position.
Install the knife holder assembly in the bracket and
tighten the knife holder socket screw. The knife holder
comes assembled with the knife installed. Double
check to make sure the knife blade is held firmly by
tightening the socket screw.
F.330-J/APR 97
Socket Screw
Socket Screw
Knife Holder
Adjustments to the paper are made by positioning the
side and back gages. The knife is squared to the paper
by loosening the knife holder socket screw and rotating
the knife holder assembly so that the knife edges match
up to the sides of the paper.
Raise the auto trip mechanism and lock it out of the
way with the thumb screw.
Your Challenge paper drill is now ready to corner.
NOTE: Maximum cutting capacity is 1/2" (13 mm).
Be sure to check the stroke adjustment to prevent the
knife from cutting too deep into the cutting block.
Blade
Holder
Nut
Knife
19