As a result, we designed custom aluminum brackets coated in satin black, which provides a beautiful and long lasting finish. The stylish blocker itself is made of crystal clear, durable cast acrylic that surpasses the strength of glass. The Windjammer Sport makes heads turn. Our wind blocker fits all Mazda Miata models with or without the factory cockpit brace and allows the use of the factory boot cover. In addition, it is fully compatible with both factory soft- and hard-tops. We provide a 4mm hex tool with every kit to assist in the installation and for future adjustments. Ryan-Performance’s wind blocker uses only stainless steel hex bolts that won't rust over time and serve as a theft deterrent, protecting your investment. Finally, our step-by-step instructions provide clear and detailed graphics to help you install your Windjammer Sport and transform your convertible driving experience!

Cast Acrylic v.s. Extruded Acrylic
Many materials can be produced by different manufacturing processes. Extruding, casting, and molding are common methods used to process acrylic. Consideration of the manufacturing process is important to achieving the desired properties of the component. Acrylic, in particular, varies in hardness between a cast and an extruded sheet. Extruded acrylic is much lower in cost and generally best used for display-type work. For superior machining and dimensional stability, cast acrylic should be used.

Imported Acrylic Beware
Like several consumer items on the market today, some plastics are manufactured outside the United States. Imported acrylics, for example, are popular because they are inexpensive. Unfortunately, sheet thickness at the bottom of the tolerance band tends to be thinner than that of the domestic sheet counterparts. Additionally, these acrylics may not be as stable and usually have greater internal stress. Imported material is suitable for the display industry, in which cost control is paramount, but for high-end and for instance high-performance products like Windjammer Sport is best not compromise. The material will provide greater stability and better overall machinability. We specified domestic sources to our suppliers.

Process Considerations
On sheet acrylic the most common surface-finishing method is flame polishing. Flame polishing uses a hot flame to flow a surface. Operator skill is critical with this method. When done properly, flame polishing produces the clearest finish on acrylics.

Other considerations
Acrylic is half the weight of glass with many times the impact resistance, it also offers excellent optical characteristics, thickness tolerances, light stability, and low internal stress levels for consistent performance. In addition to colorless (clear acrylic), a wide range of transparent and translucent colors are available. Custom colors can be made to order through special order and minimum quantities, but we usually stock Windjammer Sport is clear, green edge and dark smoke.

Conclusion
Knowledge of the plastics manufacturing process can be helpful when you want the best with no compromises. When we decided to do this we stated clear that we would offer something not available anywhere else. Extra time and research was invested for the parts special specifications.

Useless information
How acrylic is form? As derivative of natural gas:

(Natural Gas)-->>(Propane) -->>(Propylene)-->>(Isopropyl Alcohol) -->>(Acetone) + hydrogen cyanide -->>(Acetone Cyanohydrin) + sulfuric acid -->>(Methacrylamide) + methanol -->>(Methyl Methacrylate)-->> (Acrylic Plastic)

Plexiglas, Lucite, Acrylite, and Lexan are just a few of the commercial acrylic tradenames in the market today!

Comparison of Co-Efficient of Thermal Expansion
Acrylic Sheet vs. Other Materials
Inches/Inch/F
Acrylic Sheet .0000410
Aluminum .0000129
Plate Glass .0000050