![]() ![]() This can keep your plexiglass in use while saving you money. Keep in mind that repairing a crack in plexiglass is a temporary fix. ![]() After buffing it, you can use some cleaner (or even freshwater) and a rag to wipe the surface clean. If you have access to a rotary polisher, you want to polish over the crack to even out the surface. Using fine sandpaper, sand along the crack to smooth the surface area surrounding the crack. Allow the adhesive to set according to the directions on your chosen adhesive. Use as much adhesive as necessary to fill the crack and wipe away any extra with a clean cloth. Take the plexiglass adhesive and carefully fill in the crack with the needle of a glue syringe. According to Joshua Bailey’s instructions from the above article on, "the hole should be small enough to round out the end of the crack's arm, but not large enough to break the windshield". To keep a crack from spreading, you will want to find the ends of the crack and drill tiny holes where necessary with a 1/16” or 1/8” drill. Use soap and water to clean the area before working and dry it off. ![]() Basically, you need to do the following: HOW TO REPAIR A Crack IN PLEXIGLASS: In "How to Repair a Cracked Plexiglass Windshield" by Joshua Bailey, you can read step-by-step instructions on fixing a crack. Now, if you have plexiglass that has cracked, you can also make use of plexiglass adhesives. Also, keep in mind that abrasion weakens the plexiglass, so try to use the finest sandpaper possible.īelow is a video from TAP Plastics on repairing surface scratches with a Novus polish. If the scratch still appears, then the scratch is probably too deep for repair. Again, wipe off the surface with a clean cloth when finished.ĥ. Lightly coat the repaired surface with a buffing compound and, if you have access to a low-speed buffing wheel, buff the surface to finish. Finally, rinse with water and wipe with a clean cloth.Ĥ. Afterwards, rinse the surface with water, then take finer sandpaper (1000 grit or 1200 grit) and repeat the same process, sanding the scratch in circular motions until the surface is smooth. Wet the sandpaper and gently sand in circular motions over the scratch. If the scratch cannot be removed with acrylic polish or for more moderate scratches, use fine sandpaper (beginning with 600 grit or 800 grit sandpaper). Using a cloth, polish the scratch using circular motions until the area is smooth, then wipe off the polish with a clean cloth.ģ. For mild scratches, try using an abrasive acrylic polish (like the Novus Polish Products). Afterwards, rinse and dry off the plexiglass.Ģ. Even dish soap can be used to remove any dirt. ![]() Using a clean, soft cloth, wipe the plexiglass surface clean with water or a special acrylic cleaner. If the scratch is less than 5 mm in depth, however, then try this step-by-step process. According to, "any scratches deeper than 5 mm are exceptionally heavy scratches – these are generally regarded as irreparable, and can only occasionally be repaired by specialty buffing tools."īasically, if you run your fingernail across a scratch and it gets snagged, the scratch is probably beyond your repair. The first step in fixing any scratch on your plexiglass barrier is determining the depth of the scratch. ![]()
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