grinding stained glass

Grinding stained glass is an essential step in creating smooth, precise edges for your pieces before foiling or leading. Here’s a step-by-step guide:

Tools You’ll Need:
– Glass grinder (e.g., Glastar, Inland, or Gryphon)
– Grinder bit (appropriate grit—usually 80-100 for standard glass)
– Water reservoir (to keep the glass and bit cool)
– Safety glasses & ges (optional but recommended)
– Damp sponge or cloth (for cleaning edges)

Steps for Grinding Stained Glass:
1. Prepare Your Workpiece
– Ensure your glass is already cut close to the pattern lines. Grinding removes small amounts of glass, so don’t expect it to fix major cutting errors.

2. Set Up the Grinder
– Fill the water reservoir to the recommended level (prevents overheating and keeps dust down).
– Turn on the grinder and let it reach full speed before grinding.

3. Grind the Edges
– Hold the glass firmly but gently against the grinding bit at a slight angle (~45°).
– Move the piece smoothly along the edge, applying light pressure—let the grinder do the work.
– Check frequently against your pattern to avoid over-grinding.

4. Smooth Rough Spots
– Focus on any sharp or uneven areas until the edge is uniformly smooth.
– Round off corners slightly if needed for safety and fit.

5. Clean & Dry the Glass
– Rinse off grinding residue with water and dry thoroughly before foiling or leading.

Tips for Best Results:
✔ Use a well-lubricated bit (keep water flowing).
✔ Grind in one direction for consistency.
✔ For tight curves, grind in small sections at a time.
✔ Replace worn-out bits for smoother edges.

Alternative Methods:
– If you don’t have a grinder, you can use a carborundum stone or sandpaper (wet/dry) by hand, though this is more time-consuming.

Would you like recommendations on specific grinders or troubleshooting issues?