Grind glass bottles without destroying them

The grinding of glass bottles is only conditionally possible. First and foremost, sharp edges should be rounded when sanding. Engraving is technically a subspecies of grinding. Sanding, for example, a paint job is almost impossible without destroying the glass bottle by stress fracture.

Partial grinding and edge grinding

The gaving of glass bottles is a partial grinding. The other common grinding variant concerns cutting edges, which are produced when cutting bottle glass. These razor-sharp edges are created both in transverse and in longitudinal sections on the glass bottle.

If it was cut anyway with a Dremel, offers an essay change. With a grinding wheel, the cutting edges can be flattened, rounded or bevelled. Grinding always produces heat that affects the stress ratios of the glass bottle. Accordingly, concomitant cooling of the bottles is required. This in turn increases the risk of tension build-up and cracks.

Heating instead of grinding common

An alternative to grinding sharp edges is heating. With a hot flame, for example a Bunsen burner, the heated edge corners "run" to a dome-shaped rounding. From the temperature of about 600 degrees Celsius works this grinding set, which also causes no fine splintering.

As abrasive for glass bottles hard materials must be selected. Common are diamond heads or corundum splitters, which are used on engraving machines. In the industrial sector, laser technology is used for grinding glass bottles. In the majority of cases, deformation techniques and different intensity fusions are preferred to mechanical grinding. The "voltage management" is more precise and damage-free feasible in temperature-based methods.

For smaller projects, grinding sponges offset with abrasive particles can be tried on sharp edges. This often causes scratches on the glass surfaces around the cut edges, which are difficult to polish out again.

General basics for grinding glass bottles

  • Always consider alternatives and preferably prefer the grinding
  • When grinding always cool, without causing large temperature jumps
  • Fine pieces of glass are created with each grinding and must be "secured"
  • It must be expected at any time during the grinding with the breakage of the glass

Tips & Tricks

If you want to clean scratched glass bottle surfaces, do not work with abrasives, but move around in the area of ​​polishing.

Video Board: DIY: Cut Square Glass Bottle In 3 Simple Steps