Before repairing the crack, you must prevent it from growing. Use a small drill bit (1/16" or 1/8") to at the very end of the crack. This breaks the stress line so the crack won't propagate further under vibration or temperature changes. Step 2: Choose Your Adhesive Best (Professional): Acrylic Solvent Cement (e.g., Weld-On #3 Go to product viewer dialog for this item.
). These are water-thin and use capillary action to wick deep into the crack. Thicker Acrylic Cement (e.g., Weld-On #16 Go to product viewer dialog for this item. ). Best if the crack has a gap or the edges are uneven. how to fix a crack in plexiglass
Before applying any glue, you must stabilize the material. If you don't, the crack will continue to grow due to internal stress. Before repairing the crack, you must prevent it from growing