A pull-back handsaw (re)created for the company Gardena
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Project on ergonomic design
ERGONOMICSWHAT IS HAND HELD
FOR THE USERS OF GARDENA
Frida Stenlund
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REDESIGNING THE GARDENA HANDSAW
CONTENT :
FOCUS AREASUSER PROBLEMIDEATION3 CONCEPTS AND EVALUATIONFINAL CONCEPTPROTOTYPING USER TESTINGFINAL DESIGNUSECONTEXT
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3 general focus areas ERGONOMICS
GRIPTHE HANDLE SHOULD BE FITTED TO A
HUMAN HAND, WITH SEVERAL CONTACTAREAS AND LITTLE PRESSURE ON PALM
ALIGNMENTWRIST AND ELBOW SHOULD BE ALIGNED WHEN USING
THE HHHANDLE
ADAPTION THE SAW SHOULD BE ADAPTED TO
THE USER, COMMUNICATEAND FIT ITS PURPOSE (DRAW BACK CUT)
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2 general focus areasUSERS
?INTERACTION
HOW CAN THE SAW INTERACT FURTHER WITH THE USER
INTUITION THE SAWS FORM LANGUAGE CURRENTLY LACKS A COMMUNICATION WITH USER, ON WHERE TO PLACE
THE HAND AND THE DRAWBACK MOVEMENT
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We were asked to define the Gardena value and form language by investigation the different products the compa-ny has to offer. We found the three definitions : innovative, playful and reliable.
IDEATION
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IDEATION FINAL CONCEPT
CONCEPT 1 PLAYFUL & FRIENDLY
ORGANIC HOOK TO ATTACH EASILY
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Comments “ - Symmetrical and well- balanced design - Flowy lines - especially thumb/ index finger grip position
POTENTIAL USERPOTENTIAL USER
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CUTS IN ALL DIRECTIONS FOR SAFER GRIP
SAFE STRAP FOR EXTRA SUPPORT
IDEATION FINAL CONCEPT
CONCEPT 2 RELIABLE
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Comments “ - Looks safe - Not sure that I would be willing to tie myself to a saw! POTENTIAL USER
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INNOVATIVE
FUTURISTICWITH CIRCLEAND THE DESIGN
IDEATION FINAL CONCEPT
CONCEPT 3
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POTENTIAL USER
Comments “ -Looks safe and innovative at the same time-Material makes it look gripable
-Colour balance is very modern
-The circle looks like an innovative factor
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CHOSEN CONCEPT
+THESE TWO CONCEPTS HAD MOST COMMENTS
THE CHOICE WAS TO FOCUS ON DEVELOPING A CONCEPT FOR WHAT THE TOOL IS SUPPOSE TO DO - A PERFECT DRAW BACK CUT.
INNOVATIVE
PLAYFUL/FRIENDLY
FISH BELLY FOR GRIP
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-Required:Gardena logotypeGardena colour paletteErgonomic (fin the purpose for the draw-back use) To be used with glove
Desired- Wrist and forearm alignedLess than 20 degrees to lift the elbow when operating Recommended 34-38 mm length (diameter)100-130 mm length2.5 mm grip with150 or 180 degree angle
FINAL DESIGN EXPLANATION OF CHOSEN DESIGN IN RRELATION TO BRAND LANGUAGE
PROTOTYPING
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USER TESTING
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1. BLIND TEST
2. HARRIS PROFILE THE USERS WERE ASKED TO EVALUATE THE DIFFERENT VALUES OF>
SIZE (DIAMETER) LENGTH SHAPE GRIP INTUITIVE PRECISION GRIP ANGLE OF WRISTBACK STOPPER BELLY
3. 5 POINTS
1
2
3 4
5
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WINNING MODEL: A+ grip
+ two hand grip+ stopper
+ fish belly
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ANGLE OF BLADE
TESTED ANGLE 160 DEGREES
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- Too big diameter- Too square in its shape (fish belly needs to be rounded)- Upper part is to square in its volume- Not intuitive in where to place the finger - Too flat of a volume in point A- Want more of a down angled blade
Changing the handle to a steep angle / so that wrist align to elbowRound the shapeWork carefully with volumes for gripDecrease diameter to 37 mmChange angle of blade
SOLUTIONSUSER PROBLEMS
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SECOND USER TEST
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REFINING AND APPLYING BRAND LANGUAGE
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#gardenahome
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Thank you!