Warner Stained Glass
Catalog Search:
Warner Stained Glass
Warner Stained Glass
 Shop Online
 Find Glass Fast
   Web Specials
   March Sale
   New Items
   Quick Order Form
   Gift Certificates
   Shipping Info
   Ordering FAQ
   Price Matching!
 Glass Chat
 Pattern Search
 Tech Tips
 Lamp Pattern Builder
 Artist's Studio
Follow us:
  Follow Us on Facebook Follow Us on Twitter Follow Us on Pinterest Follow Us on Instagram
Shopping Cart Login You are not logged in  
Tech Tips Table of Contents

About Stained Glass
Tools and Supplies
Glass Cutting
Breaking Glass
Cutting Circles
Project Patterns
How to Cut Glass to a Pattern
Soldering Technique
Leading Technique
Copper Foil Technique
Making a Lampshade
  • Step 1. Circles can be scored freehand or with a circle cutter. First, score the circle, making sure that you start and stop the score line at the same point.
  • Step 2. Turn the glass over onto a piece of corrugated cardboard with the score line face down. With your fingers, press along the score line until you see the score line "runs" completely around the circle.
  • Step 3. Turn the glass over to the side on which you scored it. Score several tangent cuts off the circle.
  • Step 4. Break these tangential scores with your hands, pliers, or the Morton System. The circle should break out clean with no rough or jagged edges.

The most difficult concave curves can be made easy making only one score line, if you are using the Morton System. To accomplish this by using the hand breaking method and/or plier method, you must first make a series of concentric scores.

Then remove these graduated scores in sequence. Gently tap out the primary score last.

You can also accomplish this type of cut by using the crisscross pattern of score lines instead of concentric scores.


After the glass is scored and broken, you can remove small unwanted chips with grozing pliers. The serrated jaws of these pliers are used to gently nibble away at the jagged edges.

Rough edges can also be smoothed with a carborundum stone or one of the sophisticated glass routers, which have recently become an affordable item for the hobbyist. Many models of routers are available. The grinding surface is covered with fine diamond industrial chips, which grind away unwanted glass very quickly without chipping the edges. In addition, they are water-fed which keeps the glass from cracking due to heat, prolongs the life of the diamond bit, and prevents the powdery ground glass form flying around.

Go to "Sample Project Patterns"

Not only are the Tech Tips a great way to learn about stained glass, but there's a wealth of information waiting for you in Glass Chat! Glass Chat is a Warner Stained Glass online message board where stained glass artists from all over the world meet to discuss stained glass.

If you're looking for more information on this subject, you can try searching through the Glass Chat archives by entering a word or phrase in the box below.


   Home Page  |  Visit Us  |  Contact Us  |  About Warner  |  Store Hours  |  Comments   
   Wholesale Account  |  Policies & Guarantees  |  Privacy Statement   
   Shipping  |  Returns  |  Price Matching  |  Ordering FAQ   
603 8th Street | Whitehall, PA 18052 | 800.523.4242
For any questions or assistance call 1.800.523.4242  |  ©1998-2018 Warner Stained Glass All Rights Reserved.
Products shown as available are normally stocked but inventory levels cannot be guaranteed.