Electric Weed Whacker Version 3!
by Mjtrinihobby in Workshop > Tools
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Electric Weed Whacker Version 3!
My latest version has some safety and performance improvements over the previous version: I'm enjoying the lawn cutting experience even more now. Read on for what I did.
Improved Motor Mount.
I used a piece of PVC trunking bolted to the broom stick as a spur to hose clamp the motor.
Improved Safety Shield.
I used a dustbin lid and cut a shield for the flying grass. I screwed the shield onto the motor drive end with 2 small bolts. I used 3 strands of aluminum wire to prevent the plastic shield from being destroyed by the blade.
Stainless Steel Blade.
I cut a stainless steel ruler to make an improved cutting blade. I always wear steel toe boots when using my cutter since this blade will cause major injury to feet.
Li Ion Battery and Tilt Sensor.
Using an old drill battery pack that died I salvaged the good cells to have a 4s2p pack. A door intrusion sensor with magnet I used to make a tilt sensor. Once I raise the cutting end upwards the sensor deactivates the power relay and ensures the blade doesn't spin while I'm cleaning fouled grass.
Completion!
My updated cutter is lighter and safer than before. Not bad for spare parts lying around the house.