3.How to choose the right glass cutter.
There is a wide variety of glass cutters available on the market; you can choose based on the following criteria:
By blade material: For general household or DIY use, choose a carbide-tipped roller cutter; for professional glass processing, a diamond-tipped glass cutter is recommended.
By function and purpose: Standard straight-handled cutters are the most common and are suitable for straight cuts; T-shaped push cutters offer high cutting efficiency and are suitable for cutting large quantities of glass of the same size; compass cutters are specifically designed for cutting circular glass.
Selection by operating method: Standard cutters require manual application of kerosene or dry cutting; self-lubricating cutters have a hollow handle that stores kerosene, which seeps out through the blade tip to moisten the cut during operation. This makes the glass easier to break and results in a neater break line.
4.Steps and techniques for using the glass cutter.
When cutting glass with a glass cutter, correct technique is essential.
Preparation: Wipe the glass clean to ensure the surface is free of grease, and have a steel or wooden ruler ready to use as a guide.
Scoring: Place the ruler flush against the glass, leaving a gap for the blade tip. Hold the cutter as you would a pen, keeping the blade at a 45-degree angle to the glass surface and the tip pressed firmly against the ruler. Score in one smooth, continuous motion without pausing or re-scoring. The correct sound produced should be a steady 'hissing' noise.
Breaking: Move the scored glass to the edge of the table, aligning the score line with the edge. Put on gloves, hold the glass down with one hand, and grasp the edge with the other. Press down firmly and decisively with the palm of your hand. You will hear a crisp 'pop', and the glass will break cleanly.
Finishing: Use sandpaper or a whetstone to smooth the sharp edges of the glass to prevent cuts.
5.Please note: Not all types of glass can be cut with the glass cutter.
Tempered glass cannot be cut with a glass cutter! This is because tempered glass contains significant internal stress, much like a tightly inflated balloon. If the surface is scored with a glass cutter, it will not crack along a straight line, but will shatter instantly into countless small fragments with no sharp edges.
6.Key points for cutting glass of different thicknesses using a glass cutter.
Thin glass (2–3 mm): Apply light pressure; a thin wooden strip can be used as a guide.
Thick glass (4–6 mm): Apply steady, even pressure; it is advisable to brush kerosene onto the scored line to make it easier to snap.
Special glass: For patterned or frosted glass, the smooth side should face upwards during cutting.
In short, the glass cutter is an effective tool for cutting standard glass and is suitable for a wide range of tasks involving glass cutting; however, please remember never to use a glass cutter to cut tempered glass.
