Review: Greenworks 8V Rotary Tool (Grinding, Drilling, Polishing, Cutting)

by Oscar
Greenworks 8v Rotary Tool Grinding Drilling Polishing Cutting Installed Accessories

The Greenwork 8V rotary tool is an affordable and compact replacement for a dremel, which is suitable for the RC/FPV hobby applications.

Take a look at other tools you might find useful for working on your FPV drones.

Where to Buy

Greenworks 8v Rotary Tool Grinding Drilling Polishing Cutting Unbox

This is an pretty cool cordless rotary tool, nicely presented in a plastic case along with 52 basic accessories/bits.

Greenworks 8v Rotary Tool Grinding Drilling Polishing Cutting Accessories Bits Box

Greenworks 8v Rotary Tool Grinding Drilling Polishing Cutting Accessories Bits

What’s Special About the Greenwork 8V

Features

  • Self-locking shaft
  • Comes with a wide variety of bits and accessories
  • One full charge can work continuously for up to 40 minutes, charging only takes as fast as 30mins
  • LED display to show speed and battery levels
  • 80W motor, 6 speed levels
  • Integrated fan cooling system for long-term durability

Possible Applications

  • Drilling
  • Sculpture
  • Polishing
  • Rust removal
  • Find grinding
  • Cutting

Specifications

  • Powered by a 1000mAh Rechargeable Lithium Battery
  • Working Voltage: 8V
  • Motor power: 80W
  • 6 Speed Levels
  • No-load RPM: 5000-30000
  • Size: 194*36mm
  • Weight: 225g
  • Bits: 2.3mm/3.3mm

Closer Look

There’s a power switch on the front of the handle, it’s just a simple on/off slider switch.

Greenworks 8v Rotary Tool Grinding Drilling Polishing Cutting Power Button

On the rear of the handle you have a push button for changing speed levels, and an LED screen for displaying the battery level – a simple 25%, 50%, 75% and 100% indicator.

Greenworks 8v Rotary Tool Grinding Drilling Polishing Cutting Speed Led Screen Display

There are multiple cooling vents on the body.

Greenworks 8v Rotary Tool Grinding Drilling Polishing Cutting Cooling Vents

To install the drill bits/accessories, simply loosen the nut, insert the shank into the collet and tighten the nut.

Greenworks 8v Rotary Tool Grinding Drilling Polishing Cutting Install Bits

It’s “self-locking” so you don’t need to worry about the nut not being tight enough, it makes changing accessories fast and easy. The chuck specification is 2.3mm/3.3mm.

Greenworks 8v Rotary Tool Grinding Drilling Polishing Cutting Installed Accessories

There’s an LED ring around the spindle that lights up when it’s running, which is helpful for seeing what you are working on more clearly.

Greenworks 8v Rotary Tool Grinding Drilling Polishing Cutting Spindle LedIt can be recharged via the USB-C port on the back.

Greenworks 8v Rotary Tool Grinding Drilling Polishing Cutting Usb C Charging

Get This or the Dremel?

The Dremel is way more powerful and versatile, but they also tend to be very heavy, big, more expensive and has a dangling power cord. Check out dremel rotary tools on Amazon (affiliate link).

If you want something that is portable for some small and precise jobs, then the Greenwork 8V is a good option.

Here’s a size comparison with my daily cordless drill (affiliate link) which has been a great tool to have for me.

Greenworks 8v Rotary Tool Grinding Drilling Polishing Cutting Size Compare Dremel

With the Greenwork 8V, the saw blades and some other accessories are pretty low quality and wear out quite quickly. You can however, get some good quality ones for the Dremel (affiliate link) and use them on the Greenwork 8V. Make sure to wear safety glasses when using this type of tools to avoid injury!

Greenworks 8v Rotary Tool Grinding Drilling Polishing Cutting Saw Blade

For most things in RC and FPV, the Greenwork 8V is plenty in my opinion, like cutting carbon fibre, wood, plastic etc. It’s useful for grinding/polishing carbon fibre and plastic too. You can use it for drilling holes as well, but there’s only one drill bit included so you need to get your own if you need other sizes. I wouldn’t use it for large projects that require hours of work as the battery probably won’t last that long before you need to charge it, but it’s certainly a handy tool to have when you just want to cut something small and don’t want to be limited by the power cord.

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