Smooth out the "rabbet" (the L-shaped groove where the glass sits).
Keep a shop vacuum handy throughout this process to immediately suck up tiny glass shards that fall into the window track or onto the floor. how to fix a broken window pane
Warm a golf-ball-sized piece of putty in your hands until it’s pliable. Roll it into a long rope and press it against the edge where the glass meets the frame. Smooth out the "rabbet" (the L-shaped groove where