A little about glass
Since glass makes up the majority of our products and is part of most people's everyday lives, it is time to familiarize ourselves a little with what glass really is. Because how much do you really know about glass?
The new year is hereby launched with a small introduction to the material, glass.
Glass consists of fused silicon dioxide, quartz sand, chalk and soda This first melts at 1400-1600 degrees. People have known about glass for over 3000 years, the earliest finds are from the Middle East, David's Collection has a nice selection of early glass. However, our focus, in the shop, is “recent time”, so we will not touch on these early things.
Glass is a so-called amorphous (irregular) material. This means that its structure is not crystallized like, for example, iron. Glass can best be described as a solidified liquid material, it is therefore important to keep the glass moving during production until it has set and can be cooled. It has happened to many glassblowers that an object has fallen on the floor because they have not kept the object moving enough.
Glass' unique property is its ability to be shaped, penetrated by light and its ability to absorb metals and minerals in the melt, with which the possibilities for grinding increase and the color changes.
You probably know the heavy crystal glasses that clink loudly when toasting. These are added lead and manganese to give the glass a sound and clean the glass of its natural gray tones, if too much manganese is added the glass will turn purple.
The green white wine glasses may have added chromium, iron or uranium oxides, which are bonds with oxygen. With gold you color red, carbon gives brownish tones, sulfur gives amber and cobalt gives cobalt blue glass.
Much depends, however, on the cooling period and the speed, which actually gives a myriad of color nuances, which are especially familiar to collectors of hyacinth glass and children's glass. Here the colors are endless.
PS Nothing can leave the glass during use. Do not worry.
Now you have hopefully become a little smarter about what glass is and want to visit my shop.
The new year is hereby launched with a small introduction to the material, glass.
Glass consists of fused silicon dioxide, quartz sand, chalk and soda This first melts at 1400-1600 degrees. People have known about glass for over 3000 years, the earliest finds are from the Middle East, David's Collection has a nice selection of early glass. However, our focus, in the shop, is “recent time”, so we will not touch on these early things.
Glass is a so-called amorphous (irregular) material. This means that its structure is not crystallized like, for example, iron. Glass can best be described as a solidified liquid material, it is therefore important to keep the glass moving during production until it has set and can be cooled. It has happened to many glassblowers that an object has fallen on the floor because they have not kept the object moving enough.
Glass' unique property is its ability to be shaped, penetrated by light and its ability to absorb metals and minerals in the melt, with which the possibilities for grinding increase and the color changes.
You probably know the heavy crystal glasses that clink loudly when toasting. These are added lead and manganese to give the glass a sound and clean the glass of its natural gray tones, if too much manganese is added the glass will turn purple.
The green white wine glasses may have added chromium, iron or uranium oxides, which are bonds with oxygen. With gold you color red, carbon gives brownish tones, sulfur gives amber and cobalt gives cobalt blue glass.
Much depends, however, on the cooling period and the speed, which actually gives a myriad of color nuances, which are especially familiar to collectors of hyacinth glass and children's glass. Here the colors are endless.
PS Nothing can leave the glass during use. Do not worry.
Now you have hopefully become a little smarter about what glass is and want to visit my shop.