What is the difference between Fiberglass spring and carbon fiber?

Take a look at the videos. It pops out

https://www.google.com/search?q=remove+the+fiberglass+side+panel+from+a+jetted+tub+rectangle+tub+with+fiber+glass+side

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Re power-washed garage door (Katie):
It sounds like the power-washing pressure, temperature and chemicals loosened the bond between epoxy and glass fibers.
Buy a large container of fiber-glass resin, with activator / hardener.
Brush this on, mixing small amounts as you progress (sets quickly). When completely cured, lightly sandpaper and re-coat if necessary to remove furriness.
Paint with undercoat and weatherproof surface enamel paint.
Acetone solvent can clean (messy, sticky, smelly) resin.
Edit: Wear protective clothing - those fibers itch!! :)

I would use fiberglass (resin, hardener + cloth) on the inside after thoroughly scuffing (and if necessary drilling reinforcing holes) the carrier surface. If after doing that the exterior is not to your liking you could remove any loose material, fill any low areas with auto body filler, sand smooth, and paint. This type of repair will be watertight and likely stronger than the original piece. I have done similar repairs on fiberglass, plastic, carbon fiber, and wood. If the carrier is smooth plastic I would recommend drilling small holes along that crack to allow for a better bond. If it is fiberglass carbon fiber or another composite course scuffing should suffice.

The springs are either made out of carbon fiber or fiberglass. the carbon fiber springs claim to be lighter, stronger, and more durable, but the fiberglass is generally less expensive

Traditional Nunchaku was typically made from hard wood, such as oak. The modern Nunchaku can be made from wood, as well as other plastic and fiberglass materials. Also, the rope of the traditional Nunchaku was made of horsehair, while the rope of modern Nunchaku is made of nylon or metal.

Carbon fiber hiking poles are also quite strong. However, under high stress carbon-fiber poles become much more vulnerable to breakage or splintering.

Most of the traditional arrows are made of wood. There are also arrows made of aluminum, Carbon, and Carbon fiber.

Mainly there are 7 different types of bows, the Recurve bow, the Reflex bow, the self-bow, the Straight bow, the Longbow, the Composite bow, and the Compound bow.

i find that dealers and car parts stores are the best place to find car parts. go to google and search for car parts and you will get millions of links BMW parts should still get thousands.