METAL BODY REPAIR - OD1653 - LESSON 2/TASK 1
(8) Laminated safety glass must be cut and cracked on each side. When
making the cut on the opposite side, the pattern may be removed. The cut is
then made on the other side directly over the first cut.
(9) The following steps should be taken when cutting curved windshields:
(a) The outboard light (outer layer) should always be cut first. To
cut the inboard light (inner layer), turn the curved windshield over with
the outboard light facing the table. Before cutting, support both sides of
the curved windshield to prevent sagging.
(b) A windshield body opening improperly aligned after an accident
requires special care in trimming glass for replacement.
(c) After making the score, or cut, use glass pliers with several
thicknesses of cloth between the jaws. This will distribute the pressure to
the radius of the glass. With a little practice, it will be found that a
curved windshield is as easy to cut as flat safety glass.
f. Plastic Cutting. When cutting the plastic between the sheets of glass,
the following procedures should be observed:
(1) After the cut has been made and cracked, it will become necessary to
heat the plastic so that it can be cut or separated from the two pieces of
glass. This can be done by one of the following methods:
(2) A tank or vat of hot (not boiling) water into which the piece of
glass can be immersed and left for a short time (2 minutes) will cause the
plastic to melt (do not place cold glass in hot water). Allow the glass to
reach room temperature (70 degrees F) before dipping.
(3) Any liquid which will dissolve plastic may be used to dissolve the
plastic between safety glass sheets. Methanol (alcohol) has been found to
be best. After both sides of the glass have been cut and cracked, methanol
is poured or squirted