Tuesday, 16 September 2008

Glue chipping, 8

Different Glue Weights

The main control over the chip design relates to the ratio of glue to water per area of glass.

140gms glue to 850 centilitres water per square metre is the minimum. The chip will be spotty or absent entirely.

425gms glue to 850 centilitres water per square metre gives the best results – a uniform chipping usually in a fern pattern.

570gms glue to 850 centilitres water per square metre gives a larger more iceberg-looking chip.

850gms glue to 850 centilitres water per square metre is wasteful and usually the glue is so thick the glass won't chip at all.

Experiment with the intermediate amounts to see what you get. Keep good notes of all the variables involved, so you will be able to repeat a pattern if you need to.