It is recommended to repair cracks in the car windshield at a specialized repair shop. Below are the detailed steps for repairing windshield cracks. 1. First, attach a small mirror to the inside of the windshield. This helps to better reflect the crack condition. 2. Place a triangular suction cup on the windshield. The center of the suction cup should align with the impact point of the crack. Then, slowly position and align the vacuum injector with the damaged spot on the windshield. Use the vacuum function of the tool to extract any residual air from the damaged area before applying pressure to inject the repair resin into the crack. 3. Perform vacuum extraction. Pull the lever of the vacuum injector and wait for 5-10 minutes. Keep an eye on the small mirror to observe if any bubbles are forming. If no more bubbles appear, it indicates that all the air inside the crack has been extracted. If bubbles continue to form, wait longer. 4. Lower the lever. From the inside of the windshield, you can clearly observe the flow of the repair resin as it gradually covers the damaged spot. 5. Once the resin has fully penetrated the crack, remove the repair tool. Then, cover the repaired area with a transparent plastic film and use a UV lamp to quickly cure the repair resin. 6. After the resin has solidified, remove the UV lamp and peel off the transparent plastic film. Use a utility knife to gently scrape off any excess resin from the windshield, ensuring a smooth finish. This completes the windshield repair process.
