Posted August 10, 2012 - 01:06 PM
You can also use thin board (luan or thin plywood) sandwiched on the underside of the repair with another coat of fiberglass mat or cloth to strengthen the area - not so much the board itself but the box that the fiberglass makes is stronger than the sheet by itself. On my 110 hood, the area where the latch mounts on the rear underside was broken out and showed cracking. I added a support plate under the repair - also better to mount screws into.
And while it goes unsaid..... Fiberglass dust is very bad for the lungs and eyes. Be sure to wear a dust mask and goggles when working. I usually wear long sleeves and gloves to keep from itching afterwards. Another trick you can use is to strategically place a shop fan set on high to blow the dust AWAY from you - stand upwind of the work as you grind...
And is hard on the tools as well, especailly grinders and motors - make sure to blow them out afterward.