Dremel 7300 vs. 7700: The Best Dremel For Astonishing Results Every Time

The Best Dremel For Astonishing Results Every Time Dremel 7300 vs. 7700Dremel is practically synonymous with quality rotary tools.

In fact, they are so well known for producing the best rotary tools that it’s a little like Google, you probably heard someone talking about using a Dremel long before you ever heard someone mention using a rotary tool.

Dremel’s rotary tools are well known for being durable, purpose-built, machines.

Each tool also has a wide range of compatible accessories that take its function and ability even further. This is a company that stands behind its reputation, so each new model they produce has been tested true.

They offer both corded and cordless options, but this article will look at two of the cordless options, the 7300 and 7700. With such a wide variety of options available, why should you go with a cordless Dremel like the 7300 and the 7700?

There are any number of reasons you might prefer a cordless Dremel to a corded version, provided you aren’t sacrificing versatility and power in the process.

For one thing, the ability to take the Dremel with you, and maneuver it exactly where you need it, means that these tools can be used in ways their corded competitors never could.

Both the 7300 and the 7700 are built to handle a range of tasks with ease like 4000 and 4300. But which model is the better option?

Top Pick

Dremel 7700

Despite all the similarities between these two tools, one is the more versatile machine, and for that reason, our top pick is the Dremel 7700.

The Dremel 7700 offers higher rpm and is compatible with more Dremel accessories overall thanks to a slightly more powerful motor. The two rpm settings, 10,000 and 20,000 give you the precision control and raw power, respectively, to get the job done every time:

Dremel 7700

  • Two Speeds 10,000 & 20,000 RPM
  • Removable Battery Pack
  • 3-hour Charger with LED Light
  • Compact & Lightweight
  • Two-Year Warranty

Similarities and Differences


  • Both the 7700 and the 7300 are completely cordless battery pack operated units
  • Both batteries are rated for up to 30 minutes continuous use
  • Both batteries reach a full charge in 3 hours
  • The handle of each Dremel is ergonomically designed
  • Both rotary tools have a range of compatible accessories for different projects
  • Each Dremel has two-speed settings to choose from
  • High density plastic casing capable of standing up to minor falls and accidents
  • Operation is quiet, a hum and low speed and only slightly louder on high speeds
  • Compatible with all Dremel accessories up to 1/8″ (3 mm) shank size


  • The 7700 offers significantly faster rotation
  • The 7700 has both a standard set and a mechanic’s set of accessories
  • The 7300 offers a pet grooming kit which the 7700 does not

Dremel 7300 vs. 7700 Comparison Chart

Dremel 7300Dremel 7300

Speed: Two Speeds 6,500 and 13,000 RPM
Voltage: 4.8 volts
Shank Size: up to 1/8" (3 mm)
Length: 7" (18 cm)
Dremel 7700Dremel 7700

Speed: Two Speeds 10,000 and 20,000 RPM
Voltage: 7.2 volts
Shank Size: up to 1/8" (3 mm)
Length: 6" (15 cm)

Cordless Dremel Basics: What You Can Expect Whichever Model You Choose

Even though we rate the Dremel 7700 as the better option of the two machines, both of these Dremels have quite a few things in common. The Dremel 7300 is, after all, still a high-quality tool, and, as we’ll discuss later, it can even do some things the 7700 can’t (or shouldn’t).


Both the 7300 and the 7700 boast a rechargeable battery pack and a charger as part of their base package. Both batteries are rated to last for 30 minutes of use, and both will reach a full charge in 3 hours.

You can also purchase additional battery packs for both models if you need to extend your work time without a charge, but don’t want to use a traditional corded model.


Dremel also offers a 2-year limited warranty on both tools. They mean for their tools to last and will work to make it right if something goes wrong, including letting the customer decide between repair, replacement, and a refund.


Both models also come with a similar base set of accessories, and both had additional accessories that can be purchased separately so you’re able to get exactly what you need for your project.

Dremel 7300 & 7700 come with a base set of accessories

All the accessory heads are also replaceable since they do wear down with use. We’ll get more into the accessory details later.

Ergonomic Design

The Dremel 7300 and the Dremel 7700 are also both ergonomically designed. That means that these are tools that will be comfortable in your hand during even the most finicky shaping projects.

They are also designed to protect and cushion your hand somewhat from the vibration.

As anyone who has spent time working with rotary tools will tell you, that cushioning, however slight, extends your effective working time by helping prevent muscle cramps and numbness.

Hardened Plastic Casing

These two Dremels offer a very similar outer plastic casing. The hardened plastic not only helps to protect your hand, but also protects the internal wiring and motor.

Especially in busy workshops good casing on your tools means a longer useful life for that tool. These Dremels can withstand the occasional accidental fall, slip of the hand, or collision with another tool.

Dremel 7300 has a hardened plastic casing

While falls and other damage over time may cause cosmetic differences, the internal mechanisms will go unharmed during all but the highest impact scenarios.

Hardened plastic casing also protects the battery housing, preventing the housing from becoming loose over time. With both of these Dremels you can expect a long life with the battery securely housed, not rattling around loose or falling out in your hand.

The Main Differences

Of course, if these two Dremel tools were identical they wouldn’t be sold as different devices. While we prefer the Dremel 7700, both have strengths and weaknesses. These are the most important differences between these tools.


The 7300 comes with a battery voltage of 4.8, while the 7700 bumps that up to 7.2 volts. That extra power allows the 7700 to reach its top speed setting of 20,000 rpm without shortening battery life.

Overall the power difference creates a significant boost to the 7700’s power and endurance, making it a more practical choice for jobs that need a cordless rotary tool that doesn’t need to re-charge every ten minutes.


Both of these tools are dual speed option rotary tools. However, the Dremel 7700 is much faster than the Dremel 7300, with a 20,000 rpm top speed compared to the 7300’s top speed of 13,000.

Speed isn’t just a matter of how quickly you can finish a task when it comes to a rotary tool, it also plays a role in cutting power and the kinds of material you can work with using that tool.

Having two speeds means both of these Dremels are able to give you a more controlled speed for detail work, and a faster option for cutting or removing a lot of material quickly.

The 7700’s 10,000 and 20,000 rpm can simply get more done than the 7300’s 6,000 and 13,000 rpm.

Compatible Materials

Like all tools, Dremels are designed for use with specific types of material. You want a drill when you’re constructing something with screws, but a hammer is a better choice for nails.

Rotary tools are the same way, and there are some major differences between these two models.

Dremel 7700 is suitable for most materials

The 7700 is suitable for most materials, from plastic to hardwood and grout. Some soft metals will also respond well to the 7700, although you will want a higher rpm for tougher metal like brass and steel (check comparison of best Dremel bits for cutting metal). You can even do some etching and cutting of glass with this versatile tool.

The Dremel 7700 is a great option for woodworkers, in particular, because the different shaping and polishing tools will quickly create a beautiful shape without eating up a ton of extra wood in the process.

More powerful rotary tools with a higher rpm run the risk of eating through wood grain and leaving an unusable mess.

Dremel 7700 can be used for a home-repair and art projects

The versatility of the 7700 means it can be used for a lot of in home-repair and even art projects with ease. It can handle everything from quickly smoothing a sharp corner in preparation for little children, to removing and replacing old grout in a bathroom.

Dremel 7300 is suitable for some softer or more delicate materials

However, those high rpm settings are not as suitable for pet nails or some other softer or more delicate materials. The Dremel 7300 is a good option in those situations but shouldn’t be used on anything harder than solid plastic.

The Pet Grooming Kit

Rotary tools are a great way to trim your pet’s nails, assuming they can handle the noise and vibration.

The reduced speed of the Dremel 7300 is perfect for grooming pets because that level of rotation is much more comfortable for them. While the 7700 is on average the more versatile machine, this is a task that benefits from lower rpm options.

Dremel 7300 is perfect for grooming pets

The quiet hum of the 7300 compared to other rotary tools is also a great benefit here, since the quieter the machine the less disturbed your pets are likely to be by it’s function.

Alternatives for the 7700 and the 7300

There are of course alternative options for both of these tools, some options you may want to consider include. More dremel alternatives here

1. Tacklife PCG01B ReviewTacklife PCG01B

Tacklife PCG01B rotary tool is most similar to the 7300 in that it’s a little lower on the rpm spectrum.

However, it offers three different speeds, 5,000, 10,000, and 15,000 rpm.

That’s both slightly slower and slightly faster than the Dremel 7300, which translates to more flexibility for suitable materials.

2. WorkPro W004517A ReviewWorkPro W004517A

WorkPro W004517A is a good competitor for flexibility.

Like the Dremel 7700 and 7300, WorkPro offers a 2-year warranty on this tool.

It’s 6 speeds cover the full range of speed between the Dremel 7300 and the 7700.

The biggest downside to this option is that it is not, in fact, a Dremel. Since Dremel is known for its durability and precision, they are the go-to standard. However, this option offers greater flexibility in a cordless rotary tool.

3. Dremel 8220 Review

Dremel 8220

Of course, Dremel also offers a more heavy-duty and flexible cordless rotary tool in the Dremel 8220.

To give you an idea of the difference between these tools, the Dremel 7700 is a 7.2 voltage tool, while the 8220 maxes out at 12 volts.

The 8220 is also more flexible, offering a wider range of rpm, from 5,000-33,000, with variable speed settings.

The 8220 also makes going from one accessory to another much easier, using Dremel’s EZ Twist Nose Cap. Both the 7700 and the 7300 require a wrench to change accessories.

Dremel 8220 12v Cordless Review:

4. Dremel 4300 Review

Dremel 4300

Now, every once in awhile, you’ll encounter a task that requires a longer operating life than is currently available in cordless rotary tools.

Whether it’s a large volume of tasks that need completing or a single particularly detailed project you need to finish in one go, you need a corded option.

The Dremel 4300 is a good choice in the corded category because it has the standard 2-year limited warranty that comes with all Dremel products and can handle almost anything you throw at it.

This is a variable speed Dremel, so rather than switching between set-speed options you have the full range from 5,000-32,000 rpm. It also features the EX Twist Nose Cap so you can effortlessly switch between different accessory heads.

In addition to Dremel’s ergonomic design, the Dremel 4300 also offers a softer grip point to help protect your hand against long work sessions.

It maintains ease of use with a range of LED lights and an on/off button independent of the speed settings, giving you maximum control at all times.

Dremel 4300 Rotary Tool:

Dremel 7300 vs. 7700

Click Here to Leave a Comment Below