9
© BTB Auto Glass & Body Shop Tools
WK
1
LONG BLADES REACH FROM
1
ST
SIDE OF GLASS
THROUGH PRE-CUT
ADHESIVE TO
2
ND
SIDE DIFFICULT TO
REACH ADHESIVE
a)
b)
a)
b)
CUT AGAINST GLASS OR
FOR ENCAPSULATED
GLASSES CUT AGAINST
PINCHWELD
QUARTER
GLASS
GLASS
GLASS
INTERNAL
TRIM
PINCHWELD
1
ST
PRE-CUT
ADHESIVE
2
ND
DIFFICULT TO
REACH ADHESIVE
Diagram P
2.2.2.1 EXTRA HARD AND / OR WIDE ADHESIVE
When cutting extra hard and/or wide adhesives, make sure blades
are sharp and cutting lubrication is regularly applied especially
where adhesives are hidden below dashboard areas. With the
tool and blade operating in a straight line, apply the tip of the
blade directly at the adhesive and combine weight of tool with a
quick jabbing action, move from left to right over a short distance,
progressively cutting through the adhesive. Ensure separation is
complete before moving on to next section. (Refer
Diagrams M, Q
and
Diagram R
,
and section
4. Hints, Tips and Operating Techniques
(page 14)
).
JABBING BLADE QUICKLY IN AND OUT OF ADHESIVE
WHILE KEEPING TOOL & BLADE MOVING LEFT TO RIGHT
45°
90°
HARD
OR WIDE
ADHESIVE
Diagram Q
Do not force blades deep into adhesive or unnecessary jamming
may result and
tool will shut down by overload protection
.
Remember to allow the power tool and blade cutting tip to
OPERATE CONTINUOUSLY while cutting all adhesives.
2.2.2.2 REMOVING GLASS WHERE GLASS AND ADHESIVE IS
COMPRESSED CLOSE TO THE PINCHWELD
When cutting compressed adhesive (instead of using the serrated
section of the blade), use the cutting tip of a very sharp standard
blade to progressively cut adhesive. This always provides success
where wire and most other methods fail or may break the glass.
Refer to
Diagram Q
,
Diagram R
and
Diagram Y
.
PINCHWELD
GLASS
COMPRESSED ADHESIVE
e.g. 3 mm
WK4Z or WK24Z BLADE
SMALL SPACE
NO ACCESS FOR CUTTING
BLADE FROM OUTSIDE
Diagram R
2.2.3 Removing Glass Fitted With Applied Mouldings
When expensive or unremovable bonded mouldings are present,
always carry out the normal internal cut of glass, then apply one of
the following steps:
1. Cut from inside the vehicle and release 100% of the glass.
2.
(A)
Lift glass out with mouldings still attached to glass OR
(B)
slide glass out of the moulding using WK16 blade. See
Diagram S
.
For encapsulated mouldings, refer to
2.2.7 Encapsulated Glass Removal
using Reverse 'R-S' and 'VR-S' Standard Blades (page 10)
, and
Diagram U
.
(A)
(B)
BLADE
PINCHWELD
BUTYL
GLASS SLIDES
OUT OF MOULDING
GLASS
APPLIED
MOULDING
WK16
BLADE
APPLIED
MOULDING
Diagram S
2.2.4 Flexible Blades for Curved Glass
The cutting tips of flexible blades are ground thinner and longer
allowing the blade to flex and reciprocate against the curvature of
the glass, panel or controller arm. Also refer to
Diagram V
.
GLASS
BLADE FLEXES
AND FOLLOWS
CONTOUR OF
GLASS SUFACE
PINCHWELD
Diagram T
2.2.5 Undamaged and Risky Glass Removal
The power and speed of the tool provides a safe, powerful cutting
action when needed, or a gentle and precise cutting action
for delicate work. Plan removal and refer to section
2.2 CUT-OUT
PLANNING & GUIDELINES (page 7)
.
When operating in high risk areas or corner regions, or removing
undamaged laminated glass,
always complete cutting of easy to
get at sections first
which will reduce stress to the glass allowing
safer access for cutting risk areas and total separation. Always allow
the tool and blade to do the cutting and do not create leverage or
force the blade into adhesive, which may cause pressure points. Do
not attempt to push / force the glass out until the cut out is 100%
complete. You may carry out a final check with a hand held blade to
ensure separation.
2.2.6 Removal of Cracked or Badly Damaged
Laminated Glass
To overcome the difficulties of cutting wire and narrow cutting tips
of cold knife blades consistently catching on cracks in the uneven
underside surface of an extensively damaged laminated glass, use
Standard blades either from inside glass (or outside if possible) with
their wide and flat cutting tips to effectively cut against the surface.
