I AGREE, Here are some reasons why.:
Cast acrylic is more pliable than extruded, less likely to bend, chip, or melt during milling. Because extruded material is limited in thickness, cast acrylic is a better option for larger structures, installations, etc.
CAST ACRYLIC
*Greater range of thickness up to 4"
- Lightweight and rigid
- Low water absorption (used to make aquariums)
- Excellent optical properties
- Good electrical and UV resistivity
- Outstanding resistance to long-term exposure to sunlight and weathering
Casting is more labor intensive, making it more expensive. Casting yields a harder, sturdier, and more homogenous product. Casting lends greater chemical resistance over extrusion, making it the preferred material for uses involving fragrance, lotions, or other solvents.
EXTRUDED ACRYLIC
- Thermoformable
- Less expensive than glass or cast acrylic
- Excellent optical properties
- More impact resistant than glass
Here is a great reference on acrylic Acrylic Research Info
They have a great example where they show the benefit of using both types.
