
Hand Tool blade
height adjustment:
FASGROOV #1 TOOL
Push the FasGroov #1 Tool along the left edge of a test
piece of ductboard. Measure the depth of cut of the
female shiplap groove, it should be half the thickness
of the ductboard (see illustration).
If adjustment is needed: (1) Turn the blade adjustment
knob counterclockwise to lower the blade for a deeper
cut or (2) Turn the blade adjustment knob clockwise to
raise the blade for a shallower cut. Repeat adjustment
until the proper depth of cut is achieved.
FASGROOV #2/4 and #3
TOOLS
Push the FasGroov #2/4 Tool and FasGroov #3 Tool
through a test piece of ductboard. Measure the amount
of fiberglass remaining between the foil backing and
the deepest part of the shiplap cut (see illustration).
If adjustment is needed: (1) Turn the blade adjustment
knob counterclockwise to lower the blade for a deeper
cut or (2) Turn the blade adjustment knob clockwise to
raise the blade for a shallower cut.
Repeat adjustment until the proper depth of cut
is achieved.
#1 TOOL
FGV1
FGL1
Adjustment
knob
Blade
1”
1-1/2”
1/2”
3/4”
1/16”
FGV24
1/16”
FGV3
1/8”
FGL24
1/8”
FGL3
1”
1-1/2”
1”
1-1/2”
#2/4 TOOL
#3 TOOL
#1 #2/4
#3 #2/4
#1
10
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