Development of a collection of hand saws 


 

background

The aim was to investigate the use and market of manual saws today to find out how the company could bring something new to the market of manual saws. The goal was to develop one or a range of products that appeals to the end user. 

Our process

User study

To map out how and of who manual saws are used today and what can be improved for unexplored areas several carpenters were visited for interviews and observation. Also a survey was sent out to a large amount of carpenters.  

Me and another team member visiting one of many carpenters

Me and another team member visiting one of many carpenters

Survey

Survey

Usage of manual saws among carpenters today. Result from survey. 

Usage of manual saws among carpenters today. Result from survey. 

Identified user groups

From the study, four different user groups were identified. They work in different situations and therefore have different demands on the saw. To understand their different needs and requirements more in detail, different personas were developed. Åke the workshop carpenter, Leif the service carpenter, Carl the building carpenter and Urban the store manager

Main findings

The study resulted in many interesting findings to be used for the development of the concepts. One of the main findings was that pullsaws are much appreciated when making precision cuts, but not used to a large extent for other cutting situations. It was investigated further and seen that the pull technique has great potential for being applied in other areas of manual saws than the ones existing today. 

Focus areas

After analyzing the result from the research, four different focus areas for the development of a new manual saw could be identified: Allround, specialized, refined and combined. 

Concept development

To get thoughts and ideas on the discussion table and get inspiration a brain drawing session were used. 

Brain drawing session 

Brain drawing session 

Some result from the ideation phase

Some result from the ideation phase

Three concepts were developed further. In order to keep the project wide it was of great importance to have a large variety in the different concepts. They have different purposes and are useful for different user groups. 

Evaluation with users

In order to choose what to continue with for the final result, the concepts were evaluated both externally as well as in the project group. The feedback from all different parts was taken into consideration in order to decide what to proceed with. 

Evaluation of concepts with three carpenters

Evaluation of concepts with three carpenters

Prototypes

Several prototypes were developed to evaluate the functionality, size and ergonomics. 

our solution

The final result is a range of three pullsaws for different purposes, one focusing on high precision, one on accessibility and one on efficiency. The concepts all have advantages compared to electrical saws as well as manual saws with push technique. 

The products in this range use a coherent form language, designed to fit together as well as with the already existing products in the company's assortment.

Precision Pullsaw

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The High Precision Saw focuses on cuts with very high precision. It has a back support in order to have a flexible blade to cut flush to surfaces as well as a stiff blade to make straight cuts. The back support can be slided into the handle and almost completely, only leaving a part big enough to be able to slide it out. 

Pocket Pullsaw

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The Pocket Pullsaw is focused on the need of accessibility for the users. Because of its size it can easily fit into the folding rule pocket of a pair of standard working pants. Therefore the saw is always available to the user and can be used for small cuts that can occur suddenly. .man

Power Pullsaw

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The Power Pullsaw focuses on both precision and efficiency. The power pulsar is developed to be used in situations where fast and efficient cuts are needed with precision without splinters. The big size in combination with the pull function is a new and efficient way of sawing. 

Project in Industrial Design Engineering at Chalmers University of Technology

Focus Areas: Product Development, Innovation, Ergonomics

Partner: Leading international brand within hand tools

Year: 2013

Duration: 16 weeks, half time