Although this is a design project ten years ago, there is not much sense of disobedience in the present.
I was engaged in the design and research of hand tools from 2010 to 2015. At that time, I was doing the design and development of hand tools in a foreign trade company. This brand is positioned as maintenance grade products. (The above is industrial grade, for example, used on assembly lines; The following is the household grade, referred to as DIY). The positioning of the product is directly related to the product quality and design. For example, on the man-machine, the handle of DIY screwdriver product can be made into a cylinder, but if it is done in the special field, it may be regarded as a joke. The so-called form following function is estimated to be only the form.
During the design period, each project basically goes to the factory to see the process first, then uses it by itself, buys competing products/samples for testing, then analyzes the corresponding data, and finally gets its own design basis.
Each project has to spend a lot of time to understand and investigate the product form of the whole market in the early stage of design. Due to the product brand positioning, the relative research data sample is not particularly large.
The following content is the relevant information and design scheme that I collected together with another little brother at that time.
And at that time two years later on the basis of the new design and development.
Later, we have conducted in-depth understanding and development in the fields of wire cutters, screwdrivers, hand saws, level rulers, bricklaying knives, etc....

The preliminary investigation made a detailed understanding of the industry. Including professional brands such as FACOM/SATA/BAHCO/GEDORE/STANLEY/CRESCENT/Wendeng Power

differences in product specifications.
The main export market is not the same, the design specifications are not the same.

Technical circuit diagram, mainly looking for our suitable design circuit and clear quality type of our entire product

Market each style division

The products of different brands of the same specification are tested in practical operation, and the manual simulation wrench operation test is carried out on the torque machine.
and statistical score

The key secretaries of each wrench are extracted and the previous test data are integrated for reasonable evaluation. Including comfort, convenience and so on

Comprehensive comparison of other brands and positioning, it is recommended to supplement the product line. Of course, we also need to consider the market sales of other brands. Of course, we can ask our suppliers to get some information on shipments.
Some key dimensions and directions in the design were obtained in the preliminary research section;

These research data can generally be applied for many years, and also provide a lot of reference data for the next wrench development.

In the early stage, ps sometimes draws a schematic diagram.
10 "specifications for the column, design and development. After the final specification expansion.

Part of the draft screenshot

So far, I personally think this plan is still very good, the disadvantage is .... (should be heavier)

Part of the draft screenshot
Here is an independent exposition of head shaping.

Part of the product proofing effect.
A product we finally stainless steel material proofing, the effect is good,

Hand board production