Clean the plexiglass surface with mild soap and water or a specialized acrylic cleaner. Dry thoroughly.
For deeper cracks, some experts recommend using a how to fix a crack in plexiglass
You likely have most tools, but you will need a specific adhesive. Clean the plexiglass surface with mild soap and
Before applying any glue, you must stabilize the material. If you don't, the crack will continue to grow due to internal stress. how to fix a crack in plexiglass