Notes on Do-It Yourself (DIY) Items or Improvisations

These are items similar to commercial items (functionally) but constructed mostly by adapting various elements to a new purpose, and are usually ‘one-off.’

It is necessary of course that DIYs conform to sound scientific and practical principles.

These DIYs are NOT “modifications” of commercial items. Modifications in the sense of altering elements of a manufactured item are, ideally, rarely if ever done. They can be the occasion for serious errors and mishaps. In addition, modifications made after purchase, would in most if not all cases, render void any service contract. If modification of a manufactured item is considered unavoidable in particular circumstances, it should be done by or with the assistance of a qualified engineer or technician. They should be fully and clearly documented and adequately labelled on the item so that the changes are unmistakable. Use of the modified equipment should be restricted to one person or to a limited number of persons fully cognisant of the changes and their significance.

Patricia Coyle FRCA, FANZCA