Making sense of particle sizes

There are four main things to consider when choosing what media to blast with and the desired finish.

  1. The finish you want to achieve 
  2. Blast media shape 
  3. Blast media size
  4. Media hardness/durability

When looking at various sizes you will find terms such as grit/mesh, sieve size, microns etc etc. There are various standards such as those used in the US such as Tyler mesh and US sieve or European grading such as FEPA. The following table will help you to convert between the various grades and measurements that you may come across when choosing a suitable blast media.