Wire manufacturers recommend that wire is tensioned to a third of its breaking strain and this will optimise its life; but when you’re working hands-on in a field or vineyard, then what that tension should be was originally pure guesswork.

With tensioning fundamental to the Gripple system, the idea of integrating a tension gauge that would work in parallel when tensioning was conceived. We realised it had to deliver end-user benefits that not only made working with wire easier, but also max

With all those things in mind, the concept for the Gripple Torq Tensioning Tool was born.

With Gripple being a global product, the first challenge was to rationalise the recommended wire tensions used all over the world into one comprehensive gauge.

The second challenge was to design a measuring mechanism around this criteria that would a) be compatible with the existing proven Gripple tensioning system b) remain ergonomic within the hand-held tool that was known and loved by Gripple users c) work on

First of all, rough-and-ready models were used to prove concepts.

These were then refined and modelled into the working prototype Tensioning Tools for tests both in-house and out with end users.

In parallel with CAD, FEA was undertaken to verify the integrity of both the moulding and casting design.

Once approved, parts were sourced, the tooling was finalised, and the product launched into the marketplace in December 2007.

Forever refining and expanding on the earliest ‘Grippler’ tool, this time we added an extra dimension to the process of tensioning wire. As a product that again provides the end-user with something to make their job easier, the Torq Tensioning Tool si

Field testing and laboratory trials were then carried out so that any issues could be recognised and any problems could be resolved. Components were tried, tested, changed and re-tested, until finally product design could commence.