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Dremel 8100-N/21 8-Volt Max Cordless Rotary Tool

by Dremel
4.2 out of 5 stars 131 customer reviews
| 32 answered questions

List Price: $134.38
Price: $64.92 & FREE Shipping. Details
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  • Variable speed from 5,000 to 30,000 rpm to match the proper speed required
  • High capacity 8-Volt Lithium-ion battery for longer run times
  • Always Ready-Lithium-ion battery holds a charge 6 times longer than standard NiCad batteries.
  • Comfort grip housing for easier handling and better tool control
  • Two Year Warranty
See more product details
41 new from $59.99
Special Shipping Information: Due to federal and international regulations, this product can only be shipped within the continental United States.

$64.92 & FREE Shipping. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Dremel 8100-N/21 8-Volt Max Cordless Rotary Tool
  • +
  • Dremel 4486 MultiPro Keyless Chuck
  • +
  • Dremel 710-08 All-Purpose Rotary Accessory Kit, 160-Piece
Total price: $97.95
Buy the selected items together

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Product Description

The Dremel 8-Volt Lithium-ion Cordless rotary tool is the tool for people who are passionate about hands-on projects around the home such as finishing, intricate sanding, polishing, cleaning, engraving and more. The tool's variable speed control allows you to set the speed of the tool to match a particular accessory to the task at hand and it is designed to be used with all Dremel accessories and most threaded attachments.

Product Information

Technical Details

Part Number 8100N21
Item Weight 5.5 pounds
Product Dimensions 3 x 8.2 x 11.5 inches
Item model number 8100N21
Batteries 1 Nonstandard Battery batteries required. (included)
Color Gray
Power Source battery-powered
Voltage 8 volts
Item Package Quantity 1
Number of Handles 1
Included Components battery
Batteries Included? Yes
Batteries Required? Yes
Average Battery Life 1 hours

Additional Information

ASIN B008DRY59Y
Customer Reviews
4.2 out of 5 stars 131 customer reviews

4.2 out of 5 stars
Best Sellers Rank #6,426 in Home Improvements (See top 100)
#18 in Home Improvement > Power & Hand Tools > Power Tools > Rotary Tools
Shipping Weight 3.3 pounds (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item is not eligible for international shipping. Learn More
Date First Available June 22, 2012

Warranty & Support

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

From the Manufacturer

Cutting

The versatility of a rotary tool allows you to cut just about any material when used with the appropriate Dremel cutting accessory. Cut metal, wood, hard materials (such as marble, concrete, brick, porcelain, ceramics and hard epoxy), drywall, tile, grout, and much more.

8220 Series 8100 Series 8050 Series 7700 Series 7300 Series 7000 Series
Voltage 12V Max 8V Max 8V Max 7.2 4.8 6
Battery Type Lithium Ion Lithium Ion Lithium Ion Ni-Cd Ni-Cd AA Alkaline Batteries
Speed Range (RPM) 5,000 - 30,000 5,000 - 30,000 5,000 - 28,000 10,000 and 20,000 6,500 and 13,000 7,000 and 14,000
Number of Speeds Variable Variable Variable 2 2 2
Separate On/Off Speed Control
Accessory Change System EZ Twist Nose Cap EZ Twist Nose Cap Wrench Wrench Wrench Wrench
Attachment Interface

Customer Reviews

Top Customer Reviews

Verified Purchase
Ok, It was driving me crazy that I couldn't find what this actually came with. So I ordered the 160 piece (710-05) accessory kit just in case. I honestly, probably, didn't need to do that. The Dremel Itself comes with a few accessories that will get most people started and satisfied. If you need a specific tool, then buy that one. Without Further ado, the content of my package.
- 1 black 2 snap box which doubles as a carrying/storage case. Decent quality.
- 3 1-1/4"x1/8" Cut-Off Wheels
- 1 3/16"x1/8" Silicon Carbide Grinding Stone
- 1 3/8"x1/8" Aluminum Oxide Grinding Stone (Cylinder)
- 1 3/8"x1/8" Aluminum Oxide Grinding Stone (Cone)
- 1 3/4"x1/8" Bristle Brush
- 2 1/2"x1/8" Felt Polishing Wheel
- 1 Polishing Compound (bar)
- 1 1/2"x1/8" Sanding Drum Mandrel
- 3 1/2"x1/8" 60 Grit Sanding Bands
- 3 1/2"x1/8 120 Grit Sanding Bands
- 3 1/2"x1/8 240 Grit Sanding Bands
- 1 1/8" Shank Mandrel (This one looks like a screw on top of a mandrill, for felt tips with no hole in the middle)
- 1 1/8" Shank Mandrel (This one is an unscrew loader for bits/tips with holes in them)
- 1 Bit Wrench
- 1 Easy Twist Cap
- 1 Dremel 8v Variable speed Rotary Tool
- 1 1 Hour Charger
- 1 8v Lithium Ion Battery
- 1 User Guide / Instruction booklet. Does provide some helpful hints for first timers / Seasoned pros.

Hope this helps your decision. The Tool itself is amazing so far and the only reason I gave it a 4 is because initially it seemed as though the bits did not fit into the shaft. It took a wee bit of muscle to actually get the bit in there, and the instructions provided no such information. I thought I had gotten the wrong bits at first.
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Verified Purchase
Dremel makes a good product, really the only acceptable rotary tool...

This 8v unit is about the right power to do dogs nails , has a variable speed so you can start out slow to not scare them.... contrary to another reviewers opinion, I don't find it too powerful to do small dogs with.

I previously had a 7.8 volt Dremel NiCd and had battery issues a lot, they would wear out quickly, discharge quickly, when I bought Dremel branded replacements they might or might not fit correctly, this new Li Ion design solves all that.

Pro:
- Li Ion means no battery memory, longer life, shorter recharge times
- new battery plug in design is far superior to the previous NiCd design which rattled, made noise, was hard to latch.... this one fixes all of that
- good size considering the power
- a case and plenty of bits included
- variable speed so you can slowly work up speed without scaring your dog

Con
- none yet

enjoy!

-----------------------------------------------------------------------------------------

2 years later, warranty just ran out, have about 2 total hours on the tool... and the front bearing is out and the power slide doesn't work, Dremel isn't allowing a little warranty extension, so I'm outta luck... the 8100 has developed a terrible repuation over the last couple of years and you should avoid it and go with the 8220
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By JoeNolan26 on January 17, 2013
This is a very versatile tool, I bought it really not knowing what I would use it for, but I have found many applications. I have had it for almost 2 years now and I couldn't imagine not having one now. It is a great buffing tool, shaping, sharpening, for all types of material, cutting steel, plastic. It also is great to engrave or mark tools and close carving with other items with the metal point. I used it to restore my 15 year old natural gas grill last summer, it worked great with the wire brush did a great job cleaning the grates and burners. If you do buy it, make sure to get the accessory kit and another battery. Your battery will die if you use it for 20 minutes, and it takes about an hour to fully recharge. I am considering buying a plug in model for my work bench, that way when I do extended projects, I will not have to deal with the battery. One issue I have is the larger buffing wheels are only included in the large 30.00 dollar kit, I have bought 2 of them. I restore bicycles and the buffing wheels are great to buff and polish aluminum parts. I give it a 4 star rating, it would be 5 stars, but my kit only had one battery and I would like to be able to buy the one inch buffing pads separate.
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I had bought one of these battery-operated Dremels in the past and destroyed it by cutting through things it should not have been used for -- like cutting off a very thick 3/4" hardened stainless steel rod. That was what finally took its toll on it, but it had already given me much, much hard use prior to that. Then I bought a corded version 300 of the Dremel tool, thinking it would have more power. Wrong! I didn't like it -- very noisy, not all that powerful, and the cord was a nuisance. Today I bought the 8100 and using it a moment ago reminded me of how handy and powerful the LiIon setup is. This is an excellent tool, and well worth the money. Just close your eyes and buy it!
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Dremel 8100-N/21 8-Volt Max Cordless Rotary Tool
This item: Dremel 8100-N/21 8-Volt Max Cordless Rotary Tool
Price: $64.92
Ships from and sold by Amazon.com

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