Editing Fibreglass repair (section)

===A walk through of a repair===


The First step is being able to get behind the damaged area (if possible).


Then Drill out the end of each crack to stop it propagating 
(It is still debated if this needs to be done or not)
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[[image:drillholes.jpg|thumb|left|Click me to view larger]]
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Then use a dremmel to remove all the badly damaged and 'powdered' fibreglass, and to 'V' out the track of each crack from the outside.



[[image:dremmelcracks.jpg|thumb|left|Click me to view larger]]
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Then with the dremmel again (or with a grinder) rub down a few inches around the inside of the cracks.


[[image:sanddown.jpg|thumb|left|Click me to view larger]]
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Now use your polyester resin and chopped strand mat and repair on the inside. Build up a few layers of mat and resin.  This is the strength of the repair.

For any areas of significant fibreglass loss (such as the front "chin" spoilers and some jacking damage to my nearside sill) it may be worth strengthening the repair with strips of aluminium +/- aluminium mesh, worked in between layers of matting.  These strips of aluminium (about 1" wide) should be bent to shape, and then screwed into place (clamping wet matting before it sets) using countersunk screws in from the outside of the clam.  The screw heads can then be completely covered with resin from the outside, leaving them invisible once filled and painted.



[[image:resin.jpg|thumb|left|This was about 3 layers in total]]
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Then with the inside repair done start on the outside.
Building up layers of CSM matting wherever possible, and fibreglass tissue everywhere else, get a couple of layers into all the 'V' shaped channels you dremmeled earlier.

Now comes a lot of sanding to bring it all down so there were no bits of resin left proud.

[[image:sanddown2.jpg|thumb|left|Click me to view larger]]
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Leave the final filling with putty and sanding to the body shop