Choose Quality Glass at Crackmasters

Quality windshields are crafted using the Press Bending process. This method is ideal for high-volume production due to its excellent repeatability and precision, making it perfect for Original Equipment Manufacturer (OEM) windshield production. Computer-Aided Design (CAD) is used to assist in this process, performing rigorous inspections to ensure accuracy and minimize distortions, ultimately resulting in higher-quality glass.

At Crackmasters, we offer a 90-day free rock chip repair with quality windshield installations, but this warranty doesn’t apply to discount glass (sag-glass). While we can repair long cracks in quality press-glass, we can’t repair long cracks in sag-glass windshields.

Gravity Bending (Sag Bending):

In this method, two sheets of glass are stacked and placed on a mold that matches the Press Bent windshield shape. They’re then passed through a furnace heated to over 1,000°F (around 560°C–600°C), causing the glass to soften and gradually sag into the mold due to gravity. While faster and cheaper, this discount method can lead to distortions and stress lines throughout the glass. It’s also more prone to chipping, cracking, and pitting compared to Press Bending glass.

Press Bending:

This method involves heating the glass until it’s soft, then using a robotic press with an OEM mold to physically shape it into the OEM-engineered required curve. It’s commonly used for higher-quality windshields and when precise shapes are needed, such as in modern automotive manufacturing. Press Bending offers high repeatability, tight tolerances, and efficient production for OEM-quality glass. Distortions are less likely because the glass is stronger and has fewer stress lines than sag-bending glass. Press-bending is used to match the engineered specification for the windshield.

<< Click >> to Open a Crackmasters Auto Glass Quote Form

Get a Quote

Your vehicle’s glass might have an unusual name. If you have glass in your front or rear door that does not roll up or down, it’s called a vent glass. While it doesn’t open or vent, it’s a classic car feature that hasn’t changed the glass name. A vent glass is a type of glass in your front or rear door that doesn’t roll up or down.
Is it a sunroof or a moonroof? In the glass industry, it’s simply roof glass with descriptors like movable, fixed, or front, middle, or rear. A classic sunroof is front sliding roof glass. Moonroof or panoramic roof can describe a roof glass with multiple parts, such as front/fixed, middle/sliding, and/or rear/fixed roof glass. The front fixed glass, between the windshield and the front-sliding, or in this case middle-sliding: is called the eyebrow glass. This front roof glass is sometimes called defector glass.
The driver’s side is on the left, and the passenger side is on the right. This description is based on the driver’s perspective from the driver’s seat. The door directly behind the driver’s seat is the rear-left door.
Rear vs. back? Rear is on the side, behind the driver, while back is the back of the vehicle, like the tailgate, above the trunk, or above the truck bed. The glass behind the rear door is the quarter glass