Re: Fiberglass Gas Tanks
Thought I might pass along a trick I learned a long time ago for fiberglass when I installed car audio professionally. Old t-shirts or similar fabric rags make great fiberglass shapes. It may not be something you wanted to build a boat out of, but it works great for difficult shaped molds with a lot of curves. Typical fiberglass mat and cloth tear apart real easy when attempting these shapes. No stick cooking spray is also something good to use as a non bonding agent. Wax paper works pretty good to cover a mold, though not as flexible as saran wrap(never tried saran wrap). Wax paper will sometimes stick to the fiberglass and can be a pain to remove. Saran wrap will probably do the same.
Caution! I give opinions as if they were worth something. Use at your own risk.