HANDTeK - HANDTeK is an ergonomic approach to today's circular hand sanders.
Other hand sanders quickly cramp the user's hand forcing people to use their weaker arm and in the end fatiguing both arms.
HANDTeK has a flat, relaxed angled surface for improved hand placement, while incorporating a size that covers a large surface areas; therefore, doing more work in less time.
Market Research - These designs require the user's hand(s) to be in an uncomfortable grabbing position quickly leading to wrist, palm and finger fatigue.
My goal was to create a more ergonomic product people could use for longer periods before becoming fatigued.
Ideation - My inspiration was DeWALT's brand identity because I used their products at home and am familiar with their functions.
In this step of my design process I concentrated on creating proper proportions and a color scheme that kept with DeWALT's brand identity.
Strap Diagram - My first attempt at designing a Velcro hand strap making HANDTeK a one-handed sander.
The Velcro strap option could not exist with the pressure sensitive activation pad since the user's hand would constantly be pressed against the pressure pad from the tightness of the Velcro strap; The on/off mechanism would be compromised.
After further development I decided to change the strap into a single silicon form, allowing the user's hand to move around and pick up it up as well.
3d Model Study - Using a 3d hand, I created a proportional shape, inspired from my initial ideation sketches.
Model dimensions are based on the 90 percentile male and female hand dimensions found in Henry Dreyfuss's "The Measure of Man & Woman".
3D Development - My first attempt at an assembly view, to help communicate the feasibility of this product.
3d Development - Further development of motor components and how they work.
The silicon hand strap that I discussed earlier on the strap diagram page has also been added.
The top surface glows when activated reminding the user at all times that the device is turned on.
Placing pressure on the top surface activates the motor, turning the circular sander and creating a vacuum effect which will suck the dust from the work surface into the dust canister.
Assembly - Assembly rendering showing its different product components.
Grips on the dust canister form to the user's fingers, allowing for better grip while using the release buttons.
This could lead to an interesting interchangeable aftermarket series of products...
Renderings - Rendered views of HANDTeK
Final Concept - Final rendering of HANDTeK
Packaging Logo - Possible logo for future packaging
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HANDTeK