A rotary tool is plausibly the most important and versatile tool to own in your workshop. Whether you're accomplishing major home renovations or performing small DIY projects, this tool is extremely detrimental to use. One question that arises is; what is a rotary tool?
It is a highly handy power tool that is used for polishing, sanding, grinding, and drilling among other applications. With that, it's evident that every house requires a rotary tool. With this addition in your home, you'll do a dozen jobs.
Dremel is among the most trusted and favorite brands of power tools. With it, you can easily drill, polish, cut, trim, design and sand. And why stop there? With only a simple adjustment and change of attachment, this rotary kit is superb. In our review, we'll compare Dremel 7300 vs 7700, the two perfect rotary tools that look almost similar.
However, they come with different features and specs.
Dremel 7700
If you want a versatile and multipurpose rotary tool, Dremel 7700 is actually worth your consideration. With this kit, you won't regret even a single minute of your working. To kick-off, this tool comes with higher RPM speed and powerful motor, high voltage and more attachments included in the package.
Two rotation speeds (10,000 and 20,000 rpm) helps you to carefully and safely grind nails on stage. It's usually powered by a 7.2 Voltage Ni-Cad battery pack. This means that you can use multiple battery packs to allow continuous use.
This tool is not only cordless but also very portable. In simple terms, the model is very light in weight and compact hence very easy to operate and handle. Effortless and no fatigue. Also, the model provides a safe, less stressful and effective alternative to clipping.
Thanks to its charge that can swiftly charge its removable batteries within or less than three hours. Most importantly, the charge features LED lights that indicate whether the batteries are currently charging or fully charged.
Moreover, 2-speed settings are designed for different tasks. At low-speed setting the machine can perform precision and delicate work like polishing and nail trimming. On the other hand, a high-speed setting is excellent for heavy-duty tasks like grinding and cutting. With a superiors grip, this unit offers superior grip and control hence effective handling when it comes to intricate work.
The package includes 15 essential and genuine Dremel accessories. These attachments are the main reason for its versatility. There is no reason to doubt Dremel 7700. It gets the stuff done. The most interesting attachments to note include the Lawn Mower Sharpener and Garden Tool Sharpener.
Additionally, it has 401 and 402 Mandrel. As you purchase, you're guaranteed a two-year warranty. I prefer this model as my choice.
Pros
- Lightweight and easy to handle
- Has a more powerful and stronger motor
- Has 15 important accessories
- Affordable price
- A versatile tool for polishing, trimming, sanding, grinding among others
- Features an interchangeable charge and battery
Cons
- Some attachments are of low-quality and require costly replacement
- Doesn't feature lithium-ion batteries
Dremel 7300
The Dremel 7300 is a lightweight and small rotary tool. Just like the 7700 tools, this kit is most suitable for more delicate tasks and finer work. The machine is designed to have 2-speed settings (6,500 and 13,000 RPM). This is to match the perfect and proper speed required to get the handy work done.
If you want to handle delicate work like polishing and cleaning, you only need to apply a low-speed setting. The high-speed setting is made for heavy-duty work like sharpening and grinding.
Noticeably, Dremel 7300 comes with a lightweight plastic casing that makes it effortless to control. Because of its cordless attribute, you can use the machine anytime and anywhere.
I like its comfortable design, yet providing safety and cushioning to your hands. Besides, the model is 4.8 volt-battery powered to ensure heavy-dusty performance. Plus, the batteries are rechargeable and removable as well.
You'll note that this rotary provides an effective, safe alternative to clipping. Its Battery Chemistry is NiCd (Cadmium). The battery can last for more than half an hour and the charge takes only 3 hours or less to charge fully.
The powered-battery device applies an incredible 60-grit sanding drum that assists you to comfortably trim toenails in a way that is designed to be humane and harmless.
And, it's compatible with all almost all Dremel sanding bands and drums. With accessories included, you'll be excited with its capabilities and exceptional performance.
If your happiness is to own a portable, easy to use and a lightweight rotary tool, then Dremel 7300 would be your outstanding option. Significantly, this kit has a 2-year warranty from a trusted manufacturer. I don't understand why you should miss out this multipurpose versatile model from Dremel.
Pros
- The model is cheap and affordable compared to many rotary tools
- Comes with accessories that are specifically tailored for pet grooming
- Easy to use, lightweight and versatile
- Small hence portable
- Comes with 2-speed tools
- Makes pet nail grooming achievable
Cons
- Only 4.8-volt battery hence not as powerful compared to 8 and 12 voltage Dremel tools
- Nickel Cadmium batteries have less lifespan than lithium-ion batteries
- Has only two fixed speed
- The machine can overheat at some points
Dremel 7700 vs 7300 Rotary Tools Comparison
Both Dremel rotary tools have many similarities to talk about. One fascinating feature is that these two are sold and available in the market at almost the same cheaper price. If you meander around them, you'll wonder which model to buy.
However, they also come with differences. At a glance, one might be superior to the other. In this section, we'll analyze their similarities and differences.
Similarities
1. Both are cordless
The two types of Dremel are cordless. This is the main feature that differentiates them from other brands in this category. They usually run on batteries which are regularly charged now and then. Once in a while, you must recharge them to ensure continuous work.
The cordless feature further emphasizes and stresses the idea of easy handling and portability. This is because these tools are engineered to allow practical uses and convenient whenever and wherever needed.
Most importantly, they're viable options whenever you need to perform outdoor tasks without a dependable power supply or outlet available.
2. Compatible with numerous Dremel sanding bands and drums
Both 7700 and 7300 are well-compatible with several Dremel sanding bands and drums. Some are always included as ideal, standard accessories. While some require to be shipped separately. This compatibility with most Dremel attachments is the reason why the two are the greatest options. They'll help you trim, polish, grind and sand.
3. Lightweight and small
This is an excellent ergonomics. The two are small and light in weight. The two features enhance their portability. One important thing is that the kit tools are easy to handle, use and operate. Not only this but also their design indeed looks almost similar. Each has a gray housing constructed from sturdy, high-density plastic to ensure maximum performance.
Though they feature a plastic housing, it still feels extremely rugged and solid. You can easily grip the handlebar with lots of confidence.

In terms of weight, Dremel 7300 is just slightly lighter than Dremel 7700 at 1.2 lbs and 1.5 lbs respectively. This means that you can carry them to your comfort. Needless to say, this weight difference seems rather trial. Just grab one of them and you'll be able to carry it around.
4. Affordability
As they sound, both are budget-friendly. Don't confuse the price and quality. Despite the two models being cheaper, they're top-notch. Plus, they're made of premium quality materials. For me, the tools are worth to invest. If you happen to review their prices, you'll discover that their price is almost the same.
5. Battery & charging
It's no surprise that the two rotary tools run on batteries. The Ni-Cd interchangeable batteries help them to operate cordlessly. These batteries are pretty good to ensure your goals are achieved. Whether you want to polish, trim, or sand, you're free to go with the help of two models.
6. 2-speed tools
Arguably, this is the clearest feature to identify in tones of features. Both 7300 and 7700 are two fixed speed tools. While Dremel 7300 settings are 6,500 and 13,000 RPM, Dremel 7700 settings are 0,000 and 20,000 rpm. The settings help them to match the amazing speed required. You'll concur with me that such kits are magnificent to have in the workshop.
7. Warranty
One thing you shouldn't forget when purchasing your rotary tool is the warranty information. The big-name like Dremel is well-known to offer a warranty. Both machines come with a two-year warranty. This is great.
The manufacturer will assist you whenever you're having a problem, especially during installation. If the tool doesn't satisfy you, then it's easy to claim for your money. The provider may either decide to return your dollars or replace.
Differences
Both tools have differences when it comes to features. Nonetheless, the similarities seem to outweigh the differences.
1. Superiority
The two models run on batteries. On the contrary, Dremel 7300 is less superior to 7700. It is meant for delicate and light tasks. Therefore, it runs on a small, weaker battery.
Remember that it operates under a 4.8V powered-battery. In contrast, Dremel 7700 is superior to tackle handy tasks like grinding. Given that it is slightly bigger, the kit is designed to be extremely versatile with a 7.2V powerful battery. Consequently, it will depend on your needs.
2.Accessories included
Dremel 7700 has a wide range of attachments or accessories than Dremel 7300. It comes with 15 items for different purposes and tasks. In the box, you'll also find a garden tool sharpener and lawnmower. A charger is included as well. Dremel 7300 has only fewer (8) accessories on its name. All these are specifically used for pet nail grooming.
Final Verdict
To sum up, both models are paramount in our homes. They can help us to flourish and tackle different tasks. It looks like a close match, however, Dremel 7700 is more superior to Dremel 7300. Both of them have dozens of features, specs, and similarities.
After reviewing and testing, between Dremel 7300 vs 7700, we recommend Dremel 7700 as the best. It is more than a versatile tool. The model is suitable for light, delicate as well as heavy-duty applications. Eventually, it is a masterpiece and comes with a wider range of attachments. Grab it and make your grinding, sanding and cutting tasks easier.
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