The glass fibre would be OK but the polyurethane resin is not heat resistant.
If it is plastic (many speedboats are metal) it will be the plastic Epoxy Resin (exactly the same as the glue) with fiberglass cloth to reinforce it. Epoxy Resin is very strong but somewhat brittle (like concrete), the fiberglass prevent cracks in the Epoxy Resin from growing and reinforces it (like the steel rebar in reinforced concrete does).
•Spray-up is an composites fabrication process where resin and reinforcements are sprayed onto a mold. The resin and glass may be applied separately or simultaneously "chopped" in a combined stream from a chopper gun.The glass resin mixed is then rolled by hand to remove air to consolidate the fibers and to get a smooth surface.
Lucite is a material that has both properties of plastic and glass and mirrors the clarity of glass. It is heavier in “feel” as compared to traditional plastics and is of the highest quality.
Common glass is made from sand, SiO2, Na2O and CaO. Concrete is a mixture of rocks (aggregate), sand, and water.
You do not want to use a glass mold when casting resin. Resin is a two-part compound that, when mixed in proper proportions, becomes completely hard when dry. When casting resin, you want to use a flexible mold, such as a silicone mold, to cast it. Once the resin has hardened, you can flex a silicone or rubber mold, stretching and bending it to allow air between the mold and the shape, which allows the mold to release the resin form. The mold will revert back to its original state after the form has been released. A glass mold has no flexibility. If you cast resin in a glass mold, the resin will harden exactly the size of the cavity in your glass mold. While it will not bond to the glass, the result is the same. Once the resin is hard, there will be no way for air to come between the resin form and the glass mold. The resin will essentially be vacuum-sealed in place. If you have a more complex form, such as a rose shape, the resin will be stuck in place permanently. A more simple shape, such as a square, might release over time. If you set the mold upside-down, a combination of gravity, and the effects of temperature and humidity on the glass and resin, may release the resin after many weeks or months. If you have already cast your resin into the glass mold, your only option will be to wait to see if the cast will eventually release, or carefully break the glass mold from around the resin.
The epoxy resin that is mixed with it.
perspex is not a kind of glass, it's a clear acrylic resin which is used as a substitute for glass in some applications.
Super glue can.
Both glass and concrete contain sand. Sand is melted to make glass. It is mixed with aggregate (gravel) portland cement and water to make concrete.
The glass fibre would be OK but the polyurethane resin is not heat resistant.
The main filler of resin is usually a powder substance. The powder used as the main fill can vary. Some e fillers used for resin include thixotropic silica, talc, glass microspheres, chopper graphite fibers, and milled glass fibers.
If it is plastic (many speedboats are metal) it will be the plastic Epoxy Resin (exactly the same as the glue) with fiberglass cloth to reinforce it. Epoxy Resin is very strong but somewhat brittle (like concrete), the fiberglass prevent cracks in the Epoxy Resin from growing and reinforces it (like the steel rebar in reinforced concrete does).
superglue
Epoxy resin, or Goop, work well with glass.
Concrete is made of covalent compounds with strong bonds. Non-metals and metals form ionic compounds only.
An epoxy will bond glass to metal.