Roll a piece of glazing compound into a thin rope. Press it into the groove around the glass. Dip your putty knife in water or linseed oil to smooth it out, creating a beveled angle that sheds water away from the glass.
Look for small metal triangles called glazier’s points embedded in the frame. Use a putty knife or pliers to pull them out. Brush the groove clean of debris. window pane repair
: Before the 1900s, panes were made by blowing molten glass into bubbles and either spinning them into disks ( Crown Glass ) or swinging them into long tubes ( Cylinder Glass ). Roll a piece of glazing compound into a thin rope