fiberglassing

[nismosilvia]

How many layers of cloth do you think I should use for my trunk lid? Just the lid and not supports. I've got one so far lol.

[Leprechaun311]

what weight of cloth? (they spec it in oz/sq ft, typical surf glass cloth is 10oz)

using and under skin support, or just 2 ribs underneath the hinges, or just hood(trunk) pins.

care about oil canning? (horrible in a hood cause it is in line of sight, but no one sees a trunk buffeting except the guy you ust passed!)

[nismosilvia]

Lol my fist attempt looks like crap and way to thin. A floppy mess lol. What's oil caning? Waves in the glass?

[Leprechaun311]

_{"oil canning" is when you sit on someone's trunk/fender, and it pops in, then when you get up it pops back out. really thin parts will do this, and folks can be really turned off by it.}

 

_{best way to anwer the "how many layers" question is to make a test panel.}

_{4-6" wide, buttting the left side of all strips:}

_{1. put down 24" strips, 2 layers}

_{2. put down 18" strips, 2 layers (remember, all edges are in same place on the left)}

_{3. put down 12" strips, 2 layers}

_{4. put down 6" strips, 2 layers}

_{you have just made a "step ply panel", and when cured you can bend and twist each section and decide which is the right amount of stiffness}

 

_{a few hints:}

_{1. remember, the fabric is not absorbing the resin, you are "stipling" / working the air out from below thru an open mesh, getting the resin to surround / encapsulate the fiber strands.}

_{2. wear the right protective equipment (glasses when mixing, gloves always)}

_{3. fab then trim to net, you never fab to net.}