Dremel Cordless Rotary Tool Offers Brushless Performance and a Lifetime Warranty
Dremel is to rotary tools what Kleenex is to paper towels, and the brand is no stranger to the cordless space. In fact, our first Dremel cordless rotary tool review was done over a decade ago. Fortunately, our writing instruments and rotary tools have improved a lot in that time, and the Dremel 8250 is a great example of what the latest technology has to offer.
Dremel Cordless Rotary Tool Performance
Best of all in terms of performance is that Dremel packed a brushless motor into the 8250 and powered it from a 3.0Ah 12V battery. In terms of power, it ends up being 20% more than the corded Dremel 4300 (Dremel's strongest corded model). In terms of run time, it cuts 1/4" lag bolts twice as long compared to the cordless 8220.
This is all well and good, but what does it actually mean?
The advantage of brushless motors over brushed motors is that they are more efficient, providing more power and longer run time without having to replace the carbon brushes. If you've used an earlier Dremel cordless rotary tool model, you've noticed that you can apply more pressure while cutting and sanding without the tool stopping. Of course, when you perform similar tasks, it will take longer to run.
Use the dial below the on/off switch to adjust the motor to deliver 5,000 – 30,000 RPM. When you turn on the tool, the blue LED lights up in 5,000 RPM increments with some speed in between. The dial has detents that slide in but don't come to a full stop when you reach minimum or maximum speed.
There is also a red indicator light to warn you of overloads and high temperatures.
As rotary tools go, the Dremel 8250 is designed for high performance, not precision work. It's 9.6 inches long, has a slightly chunkier waist, and widens in the rear to make room for the 12V battery.
Its 1.3-pound weight is very reasonable considering the jobs it's capable of performing, including the 3.0Ah battery.
There's plenty of rubber overmolding around the tool. It contributes to overall comfort while improving the security of the grip.
As we saw earlier, there's also a built-in wire tool hanger.
Dremel Cordless Rotary Tool Prices
There are several ways to get your hands on the Dremel 8250. The basic kit includes tool, 3.0Ah battery, charger, and 5-piece accessory kit for $149.99. We've also seen it come with a $184.99 flex shaft attachment, and a $224.99 160-piece accessory kit.
Here's the cool thing: Dremel backs this tool with a limited lifetime warranty. Considering the previous model only came with a 2-year warranty, this is a big deal. Batteries come with a 2-year warranty.
the bottom line
The Dremel 8250 Cordless Rotary Tool is more powerful than corded options, runs much longer than previous wire drawing models, and is a completely corded alternative. While it's great the way it comes out, heavy duty rotary tool users might want to consider adding a second battery, while precision users could benefit from adding a Flex Shaft.
- Model: Dremel 8250
- Power supply: Dremel 12V battery
- No-load speed: 5,000 – 30,000 RPM
- Collets: 1/32 – 1/8" (1/8" collets included)
- Accessory Compatibility: All Dremel Rotary Tool Accessories
- Length: 9.6 inches
- Weight: 1.3 lbs with 3.0Ah battery
- Warranty: Limited Lifetime