
Types of Glass
Acrylic
1. Acrylic material is not as prone to breaking, however, it is easier to scratch then most glass
2. This material is also know at Plexiglas
3. This also holds a static charge and could result in lost medium on artworks (such as with graphite that can be lifted off through the static pull)
Glass
1. Glass has a green tint to it and becomes more visible as the glass gets thicker
2. Many glasses contain lead
3. The basic glass that you can buy is cheaper than the other material
Anti-reflective
1. This glass is dimpled on one side. This works to reduce the reflections that easily show up on a glass surface.
2. A disadvantage of this id the slight blurring of the artwork.
Museum Glass
1. This type of glass is very expensive
2. It comes with a backed-on surface
3. A downside to this glass is the ability it has to scratch easily
4. An advantage is the protective UV filters that are present to preserve the artwork
Laminated Glass
1. This is the most expensive glass available for artwork
2. Masking tape can damage the glass
3. If shipping, use packaging tape
Cutting the Glass
1. Clean the surface, but only along where you plan to score. Any grime or silica (the substance that makes two pieces of glass slide on top of each other to prevent scratching) will ruin your score and make you think you cannot cut properly. Just run your finger along the surface of the glass where you plan to score.
2. Obtain a glass cutter and some light oil. You can buy cutting oil at a stained glass store or use a small amount of kerosene. Dip the cutter in the oil before you score the glass. An oiled cutter creates a smoother score line.
3. Grasp your cutter like a pencil. Make sure to look at the wheel and its orientation to the glass and align it properly. This is a very simple grasp to achieve, so do not unduly complicate it.
4. Use a scrap piece of glass to practice on. Apply pressure to the glass as you pull the cutter along the surface, rolling on the small carbide wheel. The score must run from one edge of the glass to the other edge. Listen for a smooth sound like ripping silk. A gritty sound means that you are pushing too hard or that you did not oil your cutter. The less sound you make, the better your score will be. If you push too hard (a very common mistake), your cut gets "hot", meaning that it snaps and pops. Try it and you'll see. You are aiming to get a uniform score. If you are pressing too hard in one spot and perfectly in another, the glass will not break the way that you want it to. Microscopic imperfections in your score will cause your cut to go askew.
5. Score along a straight edge. Use a yardstick (meter ruler) or a normal desk ruler. Use something that has a high enough profile so that it won't conflict with the wheel on the cutter, as would a ruler with a thin metal edge.
6. Practice on scrap glass until you're ready for the real thing. You'll have a score that is not popping and is barely visible if you were to wipe the oil away. It should look like a small scratch, that's all, nothing more.
7. Grasp each side of the cut as if you were trying to break a potato chip in half with two hands. All it takes is minor pressure. It is all in the wrist action. Your elbows do not move. Simply twist your wrists (your right wrist will turn clockwise and your left will turn counterclockwise). Imagine that the score you made is half the depth of the glass and now you need to "open it up" by using the score as a weak spot.
Notes on Glass Cutting - It may simply start as a "run." A run is where the glass is starting to break along your score. It may also run the entire length of your score. Either is fine. If it only runs an inch (2.5 cm) or so, apply a little more twisting pressure and it will continue to run. You're done as soon as you have two pieces of glass instead of the one you started with.
8. Use fine sandpaper or even better, a sharpening stone, to remove the sharp edge. This edge will be where the vertical edge meets the horizontal surfaces. Not only does sanding reduce the chances of your being cut but sanded glass is less likely to chip along the edges and has some added strength.
More Notes on Glass Cutting - If you have cut drywall, tile, wood shims, acrylic, or Plexiglas, remember that they all follow the same theory. Make a weak spot, or an imperfection, along your surface and break it along the weakened line.
Pliers
There are two types of pliers that are commonly used in glass cutting
1. Nibblers
a. Smooth jaw pliers
b. Used for removing very small areas
c. Can remove about ¼ of an inch from an edge
2. Running Pliers
a. These are used for most breaks
!Caution!
After cutting glass, ensure you don’t rub your eyes without first removing the glass shards from your hands.
Glass Cutting Machine
1. Cuts top to bottom
2. Can only be used to cut straight lines
3. Used by pulling trigger back and raising the unit to the top
4. After pulling the unit up to the top, release the trigger and slide it to the bottom
Cleaning Glass/Assembly
1. To clean glass use water and a micro-fiber cloth
2. Stay away from ammonia – it causes damage
3. When cleaning, finish one side then place it clean side down on the artwork
4. Finish by cleaning the other side
5. Then place frame over the top of the glass and matte
6. Slide it to the edge of the table and pick it up/flip it over
7. Fasten in matte and glass with shooter
8. Apply dust cover
a. Dust covers help control humidity
b. Adds to the overall appearance
9. Add D-rings to back of frame
a. Ensure sides are even
10. Cut wire so it is three time the length of the frame
11. Use crows knot in wrapping the wire