Tempered glass

Normal flat glass (float glass) is used for many different purposes, there are several names (float glass can be tempered = toughened glass, plate glass, cut glass, building glass, decorative glass, glass plate for table top). Flat glass is available in several different shades (clear, grey, special clear (optiwhite), blue, etc.)
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Tempered glass
If you want more security than normal flat glass, you can select the tempering of the glass from the menu above. After tempering, the glass is about 3-5 times more durable than untempered glass (excluding the edge of the glass), and when broken, tempered glass shatters into small “vacuum cleanable” pieces, so there is little risk of cutting if the glass breaks. Tempered glass is also more resistant to temperature differences in different parts of the glass (200 kelvin difference inside the glass, maximum operating temperature 300C – untempered 40 kelvin). The edges of the tempered glass are always rough ground (even if ‘Cut with sharp edges only’ is selected). Tempered glass always comes with a little tempering glue in the corner of the glass.

If the edges of the glass are still visible after installation, we recommend that you also apply a polish to the glass from the edges menu. In this case, the sharp edges of the glass are ground to a smooth finish and polished. ready for presentation. Edge grinding also slightly increases the bending resistance of the glass. If the edges of the glass are hidden inside the frame, edge grinding is not necessary. To add to the appearance, you can also choose to have the glass surface faceted at the edge or 45-degree faceted. When facet grinding glasses, if all corners of the glass are rounded with less than 11mm of angular curvature, the facet grinding is done in a straight line and does not follow the angular curvature. Otherwise, the facet is ground on a CNC machine to follow the edge line of the glass, including the rounding.
Examples of applications
Window glass: usually 4mm or 6mm thick, thickness chosen according to the size and location of the glass. Sometimes, if the location (e.g. busy passageways and close to doors) requires it, tempered or laminated glass is also used.

Table top safety glasses (glass plate over the table) – usually 6mm thick, tempered or non-tempered glass is used. For the edge, we strongly recommend a polished edge sanding. If the surface of the table is light or white, we recommend using special clear glass, which significantly reduces the greenish tint of normal glass. However, the extra-bright glass has little effect on the green edge of the glass. For table top safety glasses, we recommend at least a small R2 – R3mm corner rotation to remove sharpness from the corners of the glass (see examples below). # glass plate on top of table # optiwhite # tempered glass

Back-painted glass – we can paint the back of the glass in a colour of your choice. Backpainted glass is suitable for example as glass table tops, interior wall glass, kitchen partition glass (# glass plate for kitchen), etc. You can create stunning decorative elements from the back-painted glasses. For the ground glass of a background painting, we always recommend to choose “Extra Clear Glass”, which has only a little bit of the natural green tint of the glass. This is when the colour rendering properties of the glass are at their best. However, extra clear glass is not completely colourless and it also “shades” the paint, so the colour seen through the glass is never the same as the same paint colour without it.

The black colour does not change much whether it is painted on normal or special clear glass.

Back-painted glass is for indoor use only and the painted side must always be hidden against another surface (table, wall) and protected from scratching.

The picture below compares the white painting on special clear and “normal” clear glass:

Below is an example of a round special clear glass, painted in Violet 4003:

All-glass table tops: always tempered glass, 6,8,10mm thick or, if you want a more luxurious look, up to 19mm glass has been used.

Tempered glass is always used for glazing the walls of terraces, due to the fact that

generally terrace structures have a longer life than other fixed structures in the house, glazing is large, terraces are walkways, there is a higher risk of collisions with glazing on terraces, usually glazing also goes quite close to the ground line

Patio wall glazing is usually 4 or 6mm thick tempered glass, depending on the size of the glass, how it is fixed and the environmental stresses on the glass. Terrace roof glazing is usually 8 or 10mm, sometimes 12mm thick tempered glass. # tempered glass
Types of glass
High clarity glass (e.g. optiwhite, clearvision, diamond). This type of glass is often referred to by a trade name, such as Optiwhite glass. Special clear glass is brighter than normal clear glass because special clear glass has a lower iron content than normal glass. In this case, also in the case of a. the colour rendering of the glass is much cleaner, for example, if normal glass is painted white against a background, the result when viewed through the glass is a strong greenish white, with special clear glass this greenish effect is much more muted. This so-called. optiwhite glass can be used for a huge variety of applications, from interior glass to solar collector glass. # low-iron # optiwhite # special clear glass # low-iron glass # glass top for table

Tinted glass (grey, dark grey, bronze, green and blue) can be used for aesthetic reasons or to reduce the transmission of solar heat energy (they absorb the heat energy of the sun) – this way the space does not heat up as much as with clear glass.

The glasses you are looking for can be used indoors for interior decoration or outdoors for construction. The surface of the glass you are looking for is, as the name implies, etched to a matt surface, where the glass provides privacy or gives the interior an aesthetic appearance. If the surface of the etched glass is facet ground, the grinding will always be on the etched side and the etched glass will become clear across the width of the grinding. If the etched glass gets very wet, the glass may become temporarily transparent.

All glass sold on this page can be tempered safety glass (toughened glass).

You can also calculate the weight of the glassby entering the glass data in the fields. The glass weight calculator does not take into account the reduction in mass due to the shape of the glass, but always calculates the weight of the glass in the rectangular area. The glass weight counter is indicative. The weight of the glass can vary between different production batches due to the thickness tolerance of the glass.

Examples of the size of angular rotations: the radius, or R, is the size of the circle of which the angular rotation is a part. Examples of what corner spinning can be compared to:

The diameter of a long-playing LP is about 300mm, i.e. radius R=150mm
The diameter of the CD is 120mm, i.e. radius R=60mm
The diameter of a 2 euro coin is about 25mm, i.e. radius R=12.5mm
The diameter of a 10 ct coin is about 20mm, i.e. radius R=10mm
3mm rounding (R3) the rounding is just visible to the eye from the corner of the round, but the shape of the glass is not yet substantially changed
The 1mm rounding (R1) doesn’t look much like a rounded corner, but feeling it with your fingertip you can feel that the sharpness has just about disappeared.

Drilling a hole in the glass – you can also order holes to be drilled in the glass to your desired location. There are certain regularities in where holes can be drilled in the glass. For example, each glass thickness has its own minimum distances, the distance between the edge of a hole and, for example, the edge of the glass, the corner of the glass or another hole. If the glass is tempered as safety glass (toughened glass) these distances are greater than for untempered glass and the distances increase with the thickness of the glass. There is also a minimum hole diameter depending on the glass thickness.

Our calculator always automatically checks that these minimum distances are met and that the hole is not too small for the glass thickness.
The holes are always rough-edged, i.e. the holes are supposed to go “hidden”.
6-40mm holes are usually drilled with diamond drills and holes over 40mm are either drilled or machined with CNC machines.
There is no upper limit to the size of the hole, we can machine almost any size hole in the glass
The holes can also be flush with the edges, making the so-called. half e.g. for cable penetrations, etc. or fireplace glass against a round fireplace

The holes cannot be too close together, but the holes can partially overlap (min 1/3 part) – this will give you longer gaps. (Hole spacers may be machined straight if production possibilities so require)

If possible, always try to use the same hole size (cheaper)

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