An Experimental Investigation into the Residual Bond of NSM Composite Strips for Concrete at Elevated Temperatures. You need to moist the hairline crack on the surface using water at least seven hours before the application of filling material or grout into the crack. Wide cracks and areas that have a number of cracks. My dads 140 liter tank which had three turtles in it bust on the bottom. . If you have anything to ask ab. Pool bubbles and delamination only gets bigger over time. Step 4: Patch over the cracks. For larger cracks, quick-setting concrete or a patching compound are generally the best. Spiderweb Cracks. . The continual heating, cooling, and washing cycles being used will gradually open up a hairline crack. Bruxism is a form of tooth grinding or clenching that usually arises as a coping mechanism for stress and anxiety. Dark Storm. A scratch deep enough to catch your fingernail probably. While hairline fractures can occur in any bone, they are most common in the weight-bearing bones of the foot and lower leg. It helpsThe process involves several steps, beginning with cleaning the cracked surface and making it moist before applying the sealant. Refrigerators, stand-alone freezers, and washing machines can all contribute to these types of tile cracks. For hairline cracks, choose a liquid concrete crack filler or thin caulk, which can flow easily into the crack and fill it. T : 020 7862 6363. Vertical crack. Scary times! Also thought I had a big scratch on my 37 gallon for the longest time. However, it has a high viscosity and can’t penetrate deep into the crack where most of the fissure resides. If this happens, the filler will dry out before the crack is properly sealed. Get two panels. Turn the compressor on and allow it to charge fully. Like, really clean that sink. Step 3: Clean Up the Spot. Some cracks and bulges in plaster may be superficial or localised; others result from failure of the masonry or timber beneath, or may indicate wider structural problems within the building. Cracks are also a great place for organic material to settle which can cause mold and mildew growth. 3 millimeter wide. It can happen to older adults after a minor fall because they tend to suffer from a loss. Although it’s always horrifying to realize this. Open up the two containers of epoxy crack sealer and scoop out equal amounts of Part A and Part B; use two separate sticks to avoid contamination. Cleaning of Crack. A heavier caulk or patching compound both work great. Depending on the type of repair and material you’re working with, here are the top options for fixing cracked or chipped tile. Deal with the hairline crack before moisture can be drawn into the stone, freeze and expand, leading to further damage. So, generally, it’s always a good idea. Our top pick is Sikaflex Pro Select Self-Leveling Sealant . How To Repair Larger Areas of Damaged Stucco. The repair has to be structurally effective. Fine hairline cracks in porcelain will continue to weaken as the dish is used. Hairline cracks can be repaired with a vinyl concrete patching compound, using a putty knife or trowel. It is only on the outside though. As long as these cracks are very thin and not wider than 1/16 inch, in most cases these are normal and not a sign of a structural problem. 3. 1 mm in the x and y directions. In my experience you can't hide it with out opening up, filling. 0726 e) 0. A hairline crack in the bowl or tank can be sealed with epoxy, but if left to grow, it could be beyond repair. Another possibility is that water is leaking through hairline cracks in your toilet. 10 years later the tanks still not leaking. in an oven, to at least 150°C. Clean the sink surface with a soft cloth and mild soap to remove dirt and grime. You really cant tape it because the corner is already "full" of mud. Mix Epoxy Filler. Professional repair costs for Ice Pick cracks can range from $50 to $70, depending on the depth and length of the crack. Professional repairs for Full Bull’s Eye cracks may range between $60 to $80, while DIY kits typically cost under $30. For a small hairline crack, re-introducing moisture to the bowl will help to close the gap. 1. First, the crack is cleaned, dried, and then blown with compressed air to make sure it’s free of any debris. Step 6: Allowing the Repair to Cure. Fractured cusp: A crack forms around a dental filling. Then sand it and spray on some texture. Reaction score. Typically, these are harmless and can form days or weeks after a new foundation is installed. -A former employee of Sun Valley Tempered Glass. Hairline cracks in toilet bowls can be caused by a variety of factors, including water pressure and temperature, manufacturing materials, and age. A hairline crack is a tiny cleft that sometimes develops on the inside or outside of the glass. The items you’ll need to fix a hairline crack on a PVC pipe include PVC glue, some sandpaper, and some rags. Windshield repair technology is a rapidly advancing industry, so the ability to repair large chips or cracks changes often and can vary depending on the repair company. The subreddit for anything related to aquariums! Come here to enjoy pictures, videos, articles and… Hokitika, New Zealand. Hairline cracks. Let the concrete dry before filling the cracks. Allow to cool in milk and then remove and rinse. Clean and dry the cracked area, then sand it with a fine-grit sandpaper. Allow it to dry completely before checking for any drainage or plumbing leaks. Keep point 3 and 4 in mind. If you do indeed have a cracked tooth, these treatments may be needed. A washable felt tip marker. I have installed tempered glass protector and bought an overpriced case to protect it from any damages. Concrete Sealer: Concrete sealer is another effective solution for sealing hairline cracks. (10d) finishing nails partway into the crack, spaced 12 in. Here are just a few of the treatment options available: Dental bonding: Hairline cracks in teeth may be corrected with a minimally invasive cosmetic touchup, such as tooth bonding. . 5 0. A hairline crack in your brick could be just one bad egg in the bunch, whereas medium cracks that spread across multiple bricks are cracks you need to fix straight away. the smallest crack compromises the integrity of the glass. For example, the concrete finishers may add too much water to the concrete mix to make it more malleable. 4483 c) 0. It can most often be found at the bottom, edges, and in the front of the aquarium. 4. As long as they stay under 2 millimeters, they shouldn’t be a. In fact, even smaller cracks can cause additional damage. Remove any algae, debris, or dirt around the crack to ensure proper adhesion of the patch. For a hairline crack, serve the meal before throwing out the crock. While they might seem alarming at first. Use 400-grit or finer sandpaper to smooth out the repaired area until it is blended in and even with the rest of the sink. I had to removed the tempered glass protector to verify if it was the tempered. Even a chip in a large tank is case to worry. Depending on the state of the cracked clay, it is usually sufficient to heal the crack. Some info on the crack: -it is about 1/2” long. Cracking paint on walls usually requires two to three coats of drywall mud to make the cracks flush with the surface. Im not talking small cracks either, It completely cracked all the way through! He was moving a rock on the bottom of the tank and dropped it smashing the bottom. In Queensland, it is illegal to drive with major cracks in the windshield, particularly if they impede your ability to safely manoeuvre the car. Once the drywall is removed, sand the edges of the drywall so that they are clean and straight. Step 8: Maintaining the Concrete Garage Floor. Use sandpaper to ensure that the tub is the right shape. However, You can use glue to fix the hairline crack. Alas, the hairline cracks to which you are referring are common, and occur mostly due to the fingerboard having shrunk a bit, as a result of drying. Heavy Items. Image by: tapatalk-cdn. The Basics of Repairing a Concrete Patio . When soil or sand absorb water, they swell up. Cleaning of Crack. My dads 140 liter tank which had three turtles in it bust on the bottom. Fish Lore's aquarium fish forum - aquarium hobbyists helping hobbyists since 2005! Fish Lore is an amazon affiliate and some pages may contain links to aquarium related products. What looks to be a hairline crack in my tank | REEF2REEF. You may skip this if you allowed the surface to dry overnight. The main characteristics that suggest a crack is much more serious are the following: Wide cracks over 5mm. These t-braces will hold the drywall to the ceiling as the adhesive cures. If the crack is really thin, a toothpick may work better. Theres two cracks actually. At first, you need to enlarge the existing gap a bit to start adding the filler. light scratches. Hairline cracks in drywall are caused by movement in the foundation or framing of the house. Make the crack wider at the bottom than at the top (Fig. Structural damages: If the cracks appear gaping, highly unusual or extending its veins, it could be a structural damage. POSSIBLE CAUSE. One runs from the corner of the tank to a little bit on the front glass which is what's pictured, and a very small, probably the size of a fingernail from a pinkie, sized one an inch underneath that on just the corner part of the tankYes. Vacuum leaks (air leaks) in an intake manifold make it difficult for the engine management system to maintain the proper air/fuel ratio. Then, use a small amount of epoxy glue to fill in the cracks. Use a chisel or scraper to gently remove any glue that has spilled out of the crack. No reason to argue. Last edited: Jun 21, 2017. Step 2: Apply The Caulking To The Crack. Allow it to dry for 24 to 48 hours. Smaller chips and hairline cracks are typically repairable. Jan 16, 2021. Firmly press the prepared vinyl patch material into the crack using a trowel. If the crack is thinner than the penny, it qualifies. Paint (if needed) Run water to test if your repair is effective. moisture enters at a crack, it is behind the lamina and contributes to blistering and peeling of the finish. “Keep in mind that even non-cracked eggs may be contaminated with Salmonella. It's not that uncommon that tanks. As the wood cools the air in it will shrink and draw epoxy into the crack. The product will soften and liquify slightly. Use aquarium-safe silicone gel for fish tank crack repair. To fix the hairline cracks, follow the following steps: Open up the crack and score the area. Apply epoxy at least half a centimeter on either side of the crack, but be sure to avoid the grout. Likely, there is no clinical or health-related reason to treat this. 1 But when it comes to your teeth, a crack is not just a crack. Its maybe 2 cm long, and with the width of a hair. Cracks in car windscreens are surface damages caused by extreme temperatures, bad weather and road debris. Step 1: Remove Loose Stucco. Numerous DIY repair kits that claim to fix hairline cracks are available in the market. I would definitely not keep a tank with a cracked rI'm full of water. This approach aims to prevent the crack from spreading further. Lake Saint Louis, Mo. When it comes to serious cracks, the repair will require a little more work. . Usually those things appear on windows or plastic doors but not in tanks with water. The brass case is the one component that is reusable in the reloading process. I was hoping someone could help me decide if this is a crack in the tank or just dripping silicone. Watched was cracked but didn't recall banging it out bumping it on anything. In this post we will look at the different types of cracks in walls ranging from subsidence cracks to a common hairline crack that you may see on a ceiling or plastered wall. I need to know if this is a scratch of a crack, and more importantly if I need to be buy a new tank. Permanent Laboratory Hard. Fractures can range in length from a little hairline fissure hardly noticeable to an open buccal fissure. uk. Install a shower curtain liner – If cracks start to. Just drill a 3/8 inch hole into the crack and push the nearly water thin Concrete Mender into the cracks. Taping it now would result in. #9. Prepare a crack mapping plan to identify the key area to be rectified. Hairline cracks are normal with conventional stucco, and stress cracks can occur as homes settle. Teeth cracks are common in children and adults 50 years old and older. There are a few methods you can try, such as using superglue or epoxy to seal the crack, or even firing the mug in a kiln. Ideal for repairing plumbing, fuel tanks, tub and shower, drains, pool and spa, boats and potable water tanks; setup occurs even under water. Trowel the compound into the crack. Hairline cracks around an inground pool sound like an initial settling, not a seasonal occurrence. Its possible". Step 2 – Prep the Crack and the Tile. See full list on efishkeeping. No tape. The Dalton Latex-ite PLI-STIX is ideal for filling and repairing wider cracks in concrete (or asphalt) surfaces. Causes. You need to work both sides of the crack. This is a safety hazard. -it is about hair width. The fact this is Diagonal is abit more concerning but still only a thin crack. 0 0 0. Hairline fractures are small cracks in a bone that occur after stress is placed on the lower leg. Why Do Fish Tanks Crack—How Do You Fix A Cracked. However, there is no way to determine crack depth based on. Do not fill the aquarium with water then attempt to dump it out. Fixing a Cracked Rim Without Welding. Allow it to dry for 30-45 minutes and then sand with fine grit sandpaper until smooth. They also have a great video. Filler — fills small cracks to add strength to a weakened area of the surface. co. Overuse and repetitive motion can cause a stress fracture. It takes >1,000,000 psi to compress glass to the point of any phase change. The typical response of the PMFL sensor in the axial (B x) direction for a 4mm deep surface hairline crack and a 4mm deep far-surface hairline crack is displayed in Fig. Our concrete patch is designed specifically to fill cracks and joints in any concrete surface that you may need to repair. Inadequate surface preparation, or applying the paint to bare wood without first applying a primer. Inject epoxy or polyurethane into the crack to. Then, blend the hardener with the resin to form the epoxy filler putty. I can feel it only on one side of the glass,. If there is any debris leftover among tiles, it would be difficult to repair the tiles with effectiveness. A patella fracture is a break in your kneecap, the bone that covers your knee joint. If the cracks appear shortly after pouring the concrete foundation, concrete may have been mixed poorly or poured too quickly. Lay a new tape on the hairline cracked area. This thick material is injected into the crack with a caulk gun or by directly squeezing it out of the tube. It is only on the outside though. Overtime, these cracks can expand and drive water bills and repair costs up. Still, expanding your cooling time by an hour or two can go a long way in helping prevent the shock of cooling, and it can keep both your clay and glaze from cracking. Hairline Cracks. Everything is level so I have no idea what has happened. 0. Small CracksPlace the tip of the syringe over the stabilizer film roughly at the center. Slowly cooling your Kiln is an easy way to prevent immediate Crazing since it helps your glaze and clay body adjust and stretch slowly. A chip fracture within a joint tends to be more stable and less urgent but still can lead to performance. For medium-size cracks (about 0. Any repetitive motion or activity that puts pressure on your bones can cause a stress fracture — playing a sport or doing physical work are common causes. 1. 3. the faint lines remained and I determined it was indeed the small crack that. Apr 10, 2015 #1 Tank is a ten gallon with a very strong base glass (thickened and probably toughened). Checking critical engine parts and castings is time well spent if it heads off a major problem that might result in a major engine issue or a warranty claim. Any crack can lead to water damage. It's okay to pour the meal into a big soup pot and finish cooking it on top of the stove. Foundations that are leaning, bowed or out of level are likewise a concern. Remove leaves and other debris from the driveway with a broom, leaf blower or shop vacuum. This conceals any fractures and reinforces the tooth. Thanks for the advice! I put a piece of tape on the end of it to see if it grows. 1). . These diamond brite damages are big problems because as time. Edit (after looking at pic): it looks as if you have had some kind of cosmetic bonding already. ) You might be able to find a replacement rI'm cheap (someone with cracked glass might be willing to ship you their rim, for example) or you might look into DIY braces. NOTE: Ideal for both glass and acrylic aquariums. Press wood putty into the hairline cracks. By evaluating the need for reinforcement and implementing appropriate methods, such as adding support braces or applying epoxy or acrylic reinforcement, you can significantly enhance the strength and durability of your tank. However, you need to ensure that water does not stand or clog. Below are the most common normal foundation cracks. To repair hairline or small cracks, coat the entire bird bath with concrete sealing paint or epoxy paint twice. It happens. REPAIRING CRACKS IN SIDEWALKS Cracks in sidewalks that are larger than hairline cracks must be enlarged before they can be satisfactorily repaired. Some kits also come with tiny razors that you can use to apply the repair material to hairline cracks. Very malleable material can cave into the external stress produced by the heavy object and result in cracks. If you’re unsure if the crack in your foundation wall is thin enough, you can do the penny test. GameStop Moderna Pfizer Johnson & Johnson AstraZeneca Walgreens Best Buy Novavax SpaceX Tesla. After tweaking many settings, changing inputs, refreshing the pixels etc. You may have to purchase the PVC glue, but it’s worth it. Even with the ideal floor designs and proper construction, it’s unrealistic to. Fix the hairline crack in the stone. If you do use a piece of scrap plastic as a patch, cut the plastic to a size that fits the crack, and try to use the same type and color of plastic. 0 0 0. HAIRLINE CRACKS DUE TO PAINT ISSUES: Repeated coats of paint over the years increase the chances of cracks. These cracks are very small- about 0. I had a very similar situation. I'd probably ignore it, maybe mark it with a Sharpie or wet/dry erase marker and monitor it for a couple of days. Sand the repaired area. In general, bigger ceiling cracks are more problematic. . I have a 3 gallon tank and it looks like it has a hairline crack going up the side of the tank. By understanding the potential consequences, you can take proactive measures to protect your beloved aquatic companions and maintain a thriving underwater ecosystem. Concrete is a material that shrinks when it sets, and the drying process can cause hairline cracks to form. In this article, we’ll tell you the important things you need to know about dealing with a cracked windshield. Mix the resin and fill in the crack using a toothpick or popsicle stick. The cost to repair drywall cracks is $100 to $400, depending on the crack's size and location. 6. 3. In general, repairs for chips, bull’s eyes and spiders are the same, while cracks. They are referred to as hairline cracks due to their thin, wispy, hairlike appearance. Add enough water to make a good mix. If additional sand is needed, use dry-graded sand (no fines) or ideally, sandblasting sand. You can repair a cracked coffee cup or a broken ceramic mug with nontoxic glue. ago. Melt the edges of the crack with the soldering iron. 2-inch wide tape ensuring great coverage area on the cracked surface allowing you to put it on most of the drywall cracks. As previously mentioned in the January issue of Walls & Ceilings, wall and ceiling contractors know the frustration of hairline cracks that are inherent with a stucco system. A hairline fracture, also known as a stress fracture, is a small crack or severe bruise within a bone. Okay, so I'm setting up a new 75 gallon tank, I drilled 3 holes in the back, one of the holes (I didn't notice when drilling) but when I was about to paint the back, the hole in the bottom right corner of the tank, has a hairline crack going from the edge of the hole, to the edge of the tank. Use a caulk gun to fill the crack with the urethane compound. Try one application, test it after it dries, and if it leaks, give it another application. 0:00 / 4:06 How To Fix a Cracked Aquarium Tank Fine Fins 37. Apply more epoxy mixture then a sealer to fix a hairline crack in a fiberglass tub. 31 Aug 2021. Use gentle pressure to push the syringe through the film and into the crack. Yes. However, it’s important to note that it may also impact the touch sensitivity or visibility of your screen. Step 5: Filling the Cracks With Epoxy Resin or Other Filler. This will help the solvent stay on the crack and not run down the side. Usually caused by some issue with the plaster over the drywall (they’re most of the times only along the surface). Plaster/Drywall Cracks (Hairline Cracks) Hairline cracks in plaster and drywall are one of the most common types of ceiling cracks. But, sometimes cracks happen in spite of any precautions taken. Well, besides moisture, cracks and foundation issues can be brought on by drought, flooding, improperly prepared soil, trees that are too close to the home, freezing and thawing, poor construction. Step 7: Restore the Tank. They usually appear within one year and caused by the settling and drying of the new foundation. Craze lines don’t cause any pain. Let us see the above steps one by one in brief, Step 1. Cost to repair drywall cracks. Secondly, bacteria can multiply easily when food spends a long time in the danger zone between 40- and 140-degrees Fahrenheit. Today I noticed what looks to me like a small hairline crack on the side of my tank! I have had the tank set up for about 6 weeks. Then spray on two to three light coats of Good-Bye Cracks. I can feel the scratch or crack on the inside of my tank but not on the outside. In some states, it’s also illegal to drive with a windshield crack. Apply primer to the hairline cracked area. Small hairline cracks up to 6" in length cost $100 to $250 to repair. Gradually, the exertion could cause hairline cracks by damaging the enamel and dentin of teeth. If an insufficient amount of drywall mud was used during the taping process, the paper tape won’t adhere well to the. Don’t rush the process! Once the surface has dried, sand it down so the surface is completely smooth and. The part of the crack you see here seems to be deeper into the glass than the rest of the crack (which seems to be just at the surface). Crack: A long thin split that may include a visible chip that started it. Stone Edge Surfaces NEW Hairline Crack Fill is a "Just Add Water" polymeric concrete mix designed with ultra fine sand to fill hairline cracks. 5cm either side of the crack and allow it to dry. If you randomly select 2 vials from the shipment, what is the probability that none of the 2 vials have hairline cracks? a) 0. However, this guide can help you understand what types of cracks you may be seeing. Fill the crack with an appropriate repair mix. Enlarge the crack along its entire length with a cold chisel and hammer (Fig. Keep the syringe still and slowly push on the plunger. The best way to fix a small drywall crack is with flexible silicone caulk. To touch up a ceramic sink, you can follow these steps: 1. However, if the crack reaches into the gum line, the tooth will likely need to be extracted. Step 3: Add Texture. Clean the Cracked Tile. Once I noticed that my crack was spreading, I started doing some research and found out that there are many different. To repair a horizontal crack on the foundation, assess the damage first, scrub the crack with a wire brush, and remove any loose material or mortar. Prevent future cracks with gentle care. It is a 2. Selection of Sealant. Pressure washer or cleaners. Clean the area around the crack with water and allow it to dry. Spatial filtering improves the signal to noise ratio, resulting in a. It does have a hairline crack in the front corner and one of the seams is loose from moving. 5 Types of Windscreen Cracks and Chips. This type of fracture usually happens from repeated stress on the bones of the foot. If a hairline crack isn’t sealed, moisture can get inside. The rubber washers inside the tank are shot, and that's what's causing your leak. With time, the layers under the topcoat tend to get brittle from continuous expansion and contraction from the change in temperature and moisture levels. One method to consider is using packing tape or super glue to seal the crack. Allow the adhesive to dry and then scrape off the excess. Recovery can be long, and side effects are common. You want to press out all the air bubbles in the layer of silicone if possible. Dirt and grime can accumulate in a hairline crack, so the first job is to clean the area thoroughly with a cloth and an all-purpose surface cleaner; Next, cut a piece of epoxy putty roughly the same size as the crack you’re filling; Mix the epoxy putty together as per the manufacturer’s instructionsFill in the cracks by Applying a thin coat of plaster patching compound over the crack , using a putty knife or trowel/. In a worst-case scenario, this can cause the electrical system to short. Then, apply the caulk to the crack, smoothing it with a tool or your finger. Again, try to remove all bubbles. A hairline crack in a plastic intake manifold usually won’t cause an engine failure, but it can cause idle, fuel mixture, drivability and emission problems. Method 1: Using Packing Tape or Super Glue. The ratio is typically 10 ounces of water to 5 pounds of vinyl patch. Then the injection fitting is set up and the epoxy is injected into the crack until. Floorboards that sag, squeak or bounce may be a sign. Using either a craft stick or your finger, apply the wood putty along the hairline crack. It forms an elastic film that stretches and contracts along with the crack. What should I do? Do I need to purchase a new tank? Anything helps. Wide cracks can first be filled partially with the sand then start with step 2. Last night I found a scratch or crack on the inside of my tank. Contact a local floor repair pro to fix or replace any damaged tile. E: info@zfn. Inspection of the crack is done and if any oil or stains have penetrated the crack and have discoloured the concrete, the stains will have to be addressed before repairing the crack. The good news is that hairline fractures typically heal on their own. Make sure the edges of the patches are thin so it's easy to sand when it dries. He drained the tank and sealed up the crack with aquarium silicone. A 6-inch taping knife works well for removing loose ceiling texture and peeling paper. WhatsApp Us. Repairing large stress cracks or corner cracks costs $150 to $400. This fracture is common among dancers. I’d advise flushing both sides of the crack—inside and outside—with brake cleaner, then heating it with a torch to draw out and burn off any residual oil. If you do see craze lines appear on your teeth, it’s best to start or continue proper dental hygiene as these thin. When I stick my finger in, I can feel it, although I can't feel it on the other side of the glass. With continued exercise, or even as a horse gets up or lies down, a small crack could turn into a full-blown fracture. They told my that is what the problem was and asked if I wanted to exchange it. I was cleaning my tank and noticed a hairline crack in the side of it! I have no idea who manufactured it (some places offer lifetime warranty) and cannot afford to. Additionally, the crack weakens the structure of the mug, making it more susceptible to breaking or shattering if bumped or dropped. . The heavy metals going into glazing pottery aren't exactly harmless either. Once I noticed that my crack was spreading, I started doing some research and found out that there are many different ways to fix a cracked aquarium. Step 2: Fill the Crack or Hole. Cracked teeth may be an emergency, but a craze line is a cosmetic issue. Moistening this area will help you prevent the concrete from absorbing water from the applied grout. Large, deep cracks in a bowed. The good news is these cracks are usually cosmetic and can be repaired by DIY homeowners for ~$200 or professionals for $400-$600. Not ever risking that again. Strip the old sealer off the surface of the tile. It’s usually caused by a traumatic injury, such as a fall or a blow to your kneecap. Diagonal cracks, cracks that run along the floor or ceiling and peeling wallpaper can also be signs of foundation issues. Old lime and gypsum plaster gets harder and harder as decades pass and this rigidity can cause small stress cracks. This article will focus on. He filled it in but you can see the line again now. Figure 3 shows images of a crack before and after the application of image processing algorithms designed to enhance the visibility of hairline cracks. Next, you will want to apply a bead of caulk along the crack in an even and generous manner. Spread another coat of mud over the new tape. Just remember to prepare the area well, apply the repair material evenly, and let it cure fully before driving on the repaired rim. In this video, I'll show you how to fix/repair your cracked aquarium tank with the help of silicon and quick glue(strong glue). Cracks typically extend far beyond their visible extent, and even a hairline crack can greatly weaken your windshield.