What kind of putty is best for leaded stained glass panels?

The best putty for leaded stained glass panels is typically a linseed oil-based putty, often referred to as "glazing putty." This type of putty has the right consistency for sealing and cushioning the glass within the lead came, allowing for flexibility and movement while preventing water infiltration. It dries slowly, providing ample time for adjustment during the installation process. Additionally, it is important to choose a putty that is specifically formulated for stained glass use to ensure durability and compatibility with the materials.