Processing & Treatment Services
BEVELLED EDGE (INC. SHAPED)
BLUNT (TIPPED) CORNERS
CLEAN CUT EDGE
CUT OUTS (CORNER, SIDE, CENTRE)
FLAT POLISHED EDGE
FLAT SMOOTH (GROUND) EDGE
HEAT SOAK TREATMENT
HOLES (INC. COUNTERSUNK & FAN HOLES)
NOTCHES (CORNER, SIDE, CENTRE)
SHAPE CUTTING (DEFINITIONS & SHAPES)
SPLASHBACK MULTI-PROCESSED PANELS
SPEAK HOLES & PAY SLOTS
Straight line and shaped bevelling is done on automatic machines which produce a polished bevel on the face of the glass. The bevel width can be varied and is dependent on glass thickness. Bevelled glass has a clean cut edge as standard but flat polished edges are also an option.
Blunt or tipped comers can be provided where the only requirement is to remove a sharp corner. The finish will be white and basic.
This is a machine flat finish which leaves a smooth, unpolished edge and arris.
Heat soaking involves heating toughened glass in an oven for a period of time to induce breakage that may be caused by any inclusions or contaminants in the glass. The process substantially reduces the likelihood of breakage after installation due to any inclusions or contaminants. The process is strongly recommended for balustrades, pool surrounds and toughened glass assemblies.
In most circumstances, where glass is to be glazed vertically 5.0 metres above ground or floor level, and in the case of sloped overheard glazing 3.0 metres above ground or floor level, it is mandatory for the glass to be heat soaked.
The heat strengthening process parallels the process of toughening, except that the cooling cycle is less rapid, thereby creating surface compression levels less than that of fully toughened glass.
Heat strengthened glass is not a safety glass but has approximately twice the mechanical and thermal strength of annealed glass of equal thickness. Heat strengthened glass normally has a break pattern of large pieces similar to a break pattern of annealed glass.
Heat strengthened glass is used in areas requiring added strength to the glass but a larger break pattern than that of toughened glass, so that in the event of breakage, the broken glass generally remains in the opening.
Heat strengthened glass, like toughened glass, cannot be further processed in any way after heat strengthening.
Holes can be drilled in all thicknesses of glass. Almost any diameter hole is available. Holes can be countersunk to accommodate mechanical fixings.
Various standard polished speak holes are available and non standard available on request. (Refer to separate section on Speak Holes).
Fan holes and holes for dog/cat doors are also available.
HOLES IN TOUGHENED GLASS
Holes must be drilled in glass before toughening.
Unusual hole configurations or large hole sizes should be referred for consideration before ordering.
The diameter of slotted holes must not be less than the thickness of the glass (t). The width of the slot (S) must be at least equal to half of the thickness of the glass (t).
The inside of notches must have radius corners at least equal to the thickness of the glass.
Standard size radius corners are 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60 and 70mm. A template is not required for standard size radius corners. Radius corners can be supplied as clean cut or with polished edges.
Squares and rectangles with radius or cut off corners are not regarded as irregular shapes. Glass defined as irregular shapes can fit into three possible categories described below with examples.
Any glass panel incorporating any or all of the following:
Standard polished speak holes, pay slots and letter slots are available as shown below. Non standard configurations are available on request.
TEMPLATE SPECIFICATION SHEET
Chevron Glass processes customer supplied templates using a process known as Virtual Digitising. This process involves taking a photo of the template against a reference point background, using a digital camera with a calibrated lens.
This photo is then imported into a program allowing us to “replicate” the individual template shape, including holes, cut-outs and notches, which is then converted into our various processing machinery.
The following specifications are intended to reduce any lost time due to an unacceptable template with the main consideration being that the quality of the template will largely affect the outcome of the finished product.
• CAD or similar computerised drawings are acceptable and preferred to actual templates.
• A template handling charge will apply in addition to other charges for all orders to template.
• All templates must be of a sturdy material, such as timber, ply, MDF, Coreflute, Perspex or metal. Coreflute is preferred due to it being a lightweight, waterproof material.
• Templates must be actual FULL SIZE with finished sizes marked on the face if possible.
• Templates that can be stretched or shrunk, such as paper or plastic, will not be accepted.
• Templates made of glass are not desirable, due to potential breakage & WH&S concerns.
• All templates must have customer’s name and order number clearly marked, attached or followed up with a faxed or emailed order.
• Templates for products with coated, mirror or patterned glass must clearly show the coated, mirror or smooth face.
• Templates made with multiple thicknesses may distort the actual size during processing.
• Templates to be returned to the customer must be labelled accordingly.
• Templates for toughened glass must clearly show where the Standards logo is to be located.
• Templates for toughened glass must comply with Chevron Toughened Glass Specifications covering sizes, notches, holes etc. for toughened glass.
• Templates with added or subtracted measurements will not be accepted.
• Multi-dimensional templates will not be accepted, i.e. one template must refer to one glass panel.
• Broken or damaged templates may not be accepted.
• Standard size radius corners (i.e. 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60 and 70mm) do not require a template.
• Radius corners drawn on orders and faxed will not be accepted as a template unless an accompanying specified dimension is included.
• Hole positions on templates should be clearly marked with a cross to identify centre point or supplied with required hole sizes drilled in the template.