The term refers to fusing, slumping, and other glass processes which take place at temperatures between 600 to 950 °C approximately. Glass fusing is the process of using a kiln to join together pieces of glass. If you apply heat to glass, it will soften. If you continue to apply heat, the glass will become more fluid and flow together. Two or more pieces of glass will stick (or "fuse") to each other.

When the right kind of glass is heated and then cooled properly, the resulting fused glass piece will be solid and unbroken. Many people also use the word "fusing" to include bending and shaping glass using the heat of a kiln. This manipulation can take many forms, but the most common is slumping, where a mold is used to cause already fused glass to take on the shape of a bowl, a plate, or similar object.

Other kinds of manipulation done with fusing techniques are combing, which involves using a tool to distort the shape of the glass while it is hot, and fire polishing, which uses a kiln to heat the glass just enough to make it shiny and smooth.

Another category of kiln-forming activity involves the use of molds to form glass into more complex shapes. Virtually any shape that can be formed in clay or wax can also be made in glass. These processes tend to be more complicated than basic fusing and slumping.

Flameworkung or Lampworking is a type of glasswork where a torch or lamp is primarily used to melt the glass. Once in a molten state, the glass is formed by blowing and shaping with tools and hand movements. It is also known as flameworking or torchworking, as the modern practice no longer uses oil-fueled lamps.

Early lampworking was done in the flame of an oil lamp, the artists today use torches that burn either propane or natural gas, or in some countries butane, for the fuel gas, mixed with either air or pure oxygen as the oxidizer. 

Openwork Glass is a technique of my authorship that I have developed from inspiration in our universe and cosmos. That cosmos that surrounds us full of mysteries, made up of gases, minerals and rocks.

Our cosmos is a set of infinite particles of various elements and substances. My intention was to create a new texture, my own glass surface, through which I could create works. Taking inspiration from the cosmos as a starting point, I decide to start with small pieces of glass that represent the particles and join them together using wire threads that represent the minerals present on the planets.

In this way, a totally different glass surface is created, openwork, ethereal, airy and light. First, the surface is melted in the oven, which is created with small pieces of glass of different sizes and colors, attached to thin wire threads, meticulously leaving the free spaces where the draft is desired. After this first firing, it is painted with pigments and enamels, taken to the oven again, deposited on a previously made mold to create this work, which will give it shape, depth and movement.