Customer Reviews for Dremel - 8240 12V Superior Control and Quiet Operation Cordless Rotary Tool Kit
Customer Rating
1
Not good
on May 24, 2026
Posted by: JohnDoe
I bought the 8240-5 a month or two ago. Not worth it; at all. The second time I used it (sanding), the gray piece on the end shot off the tool, into my shop. It melted the inside of the gray piece and melted where they come together.
Response from dremel.comBy Dremel Customer Service, August 3, 2026
Thank you for sharing your experience with the Dremel 8240-5. We’re sorry to hear about the issue with the gray piece melting and detaching during use. This is not typical, and we want to help resolve it. Please contact Dremel Customer Service at 1-800-4-DREMEL (1-800-437-3635) or visit www.dremel.com for support.
I have the Dremel 8220 and although a few years old it has only been used a couple of times. I pulled it out this week to use it a d it won't run. Charger works but battery apparently doesnt charge b/c tool is dead. Seems like a common problem with this brand/battery. For the cost of this tool, Dremel do better! So disappointed in this product 😞
No, I would not recommend this to a friend.
Response from dremel.comBy After Sales Associate, May 6, 2025
Oh no! We are sorry to hear that and we stand behind our tools. We will reach out to you to make it right or please contact us at 1-800-437-3635 Monday – Friday 8 am – 5 pm CST. Or contact through email or chat on Dremel.com.
Recently bought as a first Dremel after other rotary tool I got broke in 2 days of light use. I have engraved metal and carved/shaped wood with no problem, overall comfortable and easy to use. My only gripe with it is the plastic shell feels flimsy and more like a toy than a tool, but it is phenomenal for DIY/Hobbyists.
[This review was collected as part of a promotion.] I got it for a special Job then when I finished the job I realized that I could get all these different bits for all kinds of different things
[This review was collected as part of a promotion.] I needed a cordless dremel for a project and this tool was superb. Powerful, maneuverable and quite handy
[This review was collected as part of a promotion.] I love this cordless Dremel. You can drag it where ever your project is. Its sturdy and powerful. Great value for what this baby can do.