Cut glass bottle lengthwise without breakage

In order to cut a glass bottle lengthwise in the vertical direction, even more "luck" is required than with horizontal cross sections. In the longitudinal direction, the controlled and intended break is much more difficult to realize successfully. A diamond wheel dremel can help outsmart the risk of breakage from the tension of the material.

Consider reshaping as an alternative

The targeted and precise cutting of a glass bottle in the longitudinal direction is fraught with risk. If a bottle-shaped tray is to be produced in bowl form, the alternative of deformation by melting can be considered. Glass bottles heated in an oven fall and usually fold themselves into gravity like gravity.

To halve the bottle in the vertical direction, a Dremel is the most promising for scoring or cutting. In addition to the processing tool, bottle attachment during cutting and breaking is crucial. Even if the scoring or the cut succeeded, breakage can occur when the bottle halves are separated.

Set up a safe work place

Since the bottle glass cutting always works with cooling or temperature contrast, a sink or sink is an ideal place to work. A suitable loosely adjusted vice can hold the neck of the bottle. As a counter bearing can act a "flushing sponge tower".

While cutting with a Dremel, running cool water is passed to the glass bottle to cool the cut. The water should be cool but not cold. Depending on the processing intensity and bottle wall thickness, a temperature between five and ten degrees Celsius is suitable. If direct cutting is intended, the bottle body must be stored safely. For this purpose, the sink or sink can be filled with foam cubes.

General tips for cutting longitudinally

  • The scoring or cutting depth before a controlled breakup should be at least half of the glass wall thickness
  • Temperature differences and contrasts during cutting and before completion must be kept as low as possible
  • No mechanical pressure should be exerted on the glass bottle while it is being scratched or cut

Tips & Tricks

If you want to cut particularly decorative, high-quality or rare glass bottles lengthwise, go to the Glaser. Specialist companies have special (very expensive) glass band saws with professional cooling techniques and breakage protection devices.

Video Board: How to Cut Glass Bottles | 3 ways to do it