Dremel is one of the most trusted brands of power tools. In this article, we will compare Dremel 7300 vs 7700, two rotary tools that are available in a similar price range. In a glance, these two models look similar, as they both have a gray plastic housing and blue switches. However, they actually come with different specs and features.
Continue reading below to find out more about:
– The design and dimensions of each rotary tool
– The batteries that Dremel 7300 and Dremel 7700 use
– The speeds and suitable uses of Dremel 7300 vs 7700
– What accessories that are included with each model
– The warranty information for Dremel 7300 and Dremel 7700
– Which rotary tool that is generally more recommended
Size and Weight
In terms of design, Dremel 7300 and Dremel 7700 indeed look very similar. They each have a gray housing made from high density plastic with a black finish on the rearmost part. On the handlebar of each unit, you can find a blue switch along with a blue dial for adjusting the speed.
Although the housing is plastic, it still feels quite solid and rugged. You can grip the handlebar with confidence. There are some textured lines to enhance your grip so that the rotary tool won’t slip out of your hand during work. Both Dremel 7300 and Dremel 7700 are really compact and lightweight with excellent ergonomics.
Dremel 7300 is slightly lighter at 1.2 lbs, whereas Dremel 7700 is a little bit heavier at 1.5 lbs. Needless to say, the weight difference is rather trivial. Both rotary tools here are highly portable and easy to carry around.
Both models are cordless. They run on batteries which will need to be recharged every once in a while. The cordless design further emphasizes the idea of portability, as these rotary tools are designed to allow convenient and practical uses wherever and whenever needed. Dremel 7300 vs 7700 are viable options when you need to work outdoors without a reliable power outlet available.
Both of these models are compatible with various Dremel sanding drums and bands. Some are included as standard accessories, some others need to be purchased separately. The compatibility with most Dremel accessories makes Dremel 7300 and Dremel 7700 great options if you already have another Dremel tool in your toolbox.
Battery and Charging
As mentioned above, Dremel 7300 and Dremel 7700 run on batteries in order to operate cordless. However, they use different kinds of batteries. Dremel 7300 is meant for light and delicate tasks, so it runs on a smaller, weaker battery. On the other hand, Dremel 7700 is designed to be more versatile and is given a bigger, more powerful battery.
Dremel 7300 runs on a 4.8V Ni-Cad battery. This should be sufficient for light, delicate tasks. The battery life is pretty good. It can last for about 20 minutes per charge. Meanwhile, a full recharge takes about 3 hours. An optional battery pack is available as a separate purchase; you can buy the optional battery pack if you expect to work continuously without being able to recharge, so you can just swap the batteries when you run out of power.
Dremel 7700 runs on a 7.2V Ni-Cad battery. It is much more powerful, so it can serve a wider range of tasks from the light ones to the heavy ones. However, it also only lasts for about 20 minutes per charge, which isn’t good enough for any kind of extended work. It also takes about 3 hours to recharge from empty to full. Getting an additional battery pack may be necessary.
One big difference between Dremel 7300 vs 7700 is the speeds. This is more-or-less related to the power and battery. As expected, Dremel 7300 has much lower speeds because it is meant for light-duty use. Dremel 7700 has a wider speed range and is able to reach higher speeds.
Dremel 7300 has two speed settings, low and high. However, compared to most other rotary tools, Dremel 7300 is much slower. The low speed setting is 6,500 RPM, whereas the high speed setting is only 13,000 RPM.
Dremel 7700 also has two speed settings that are labeled low and high. This model is considerably faster and more powerful. Although it still can’t be compared to professional rotary tools, especially the corded models, it is still quite handy and useful. The low speed setting is 10,000 RPM, and the high speed setting is 20,000 RPM.
When choosing between Dremel 7300 vs 7700, you must consider carefully what tasks and applications that you are going to use the rotary tool for. If you choose a rotary tool that is too powerful for a delicate task, it may actually lead to bad results or even damage. Meanwhile, using a weak rotary tool for a heavy task will yield underwhelming results.
Dremel 7300 is only recommended for light, delicate tasks such as pet grooming. In fact, it is often marketed as a pet grooming tool instead of a conventional rotary tool. It is suitable for taking care of your dog’s or cat’s nails. The low speed will do the job without causing pain to your pet or flinging the debris across the room.
Perhaps you can also use Dremel 7300 for light cleaning on surfaces that are easy to deal with, such as wood. However, it is not suitable for serious sanding or grinding.
Dremel 7700 is more versatile. It can still be used for grooming your pet’s nails when used carefully at the low speed setting. However, this rotary tool also has the speed and power for heavier tasks, such as actual sanding or grinding on wooden or metallic surfaces.
You can also use Dremel 7700 for cutting through various materials, including brick, concrete, tile, grout, marble, porcelain, and hard epoxy. Cleaning or polishing surfaces is also a breeze with the right accessory, which is included in the box. Carving into woods or soft metals is possible, but you may want to look for a more capable and stable rotary tool for that.
Dremel 7300 only comes with 8 accessories. Of these pieces, most of them are designed to aid in pet grooming. There are only 2 accessories for sanding: a 1/2-inch 60-grit sanding band with mandrel #407 and a 1/2-inch 60-grit sanding brand #408. The charger is included, but there is no additional battery pack.
Dremel 7700 comes with a wider range of accessories. There are 15 items included for different tasks and purposes. The included accessories are:
– For carving: 1/8-inch high speed cutter #191.
– For cutting: heavy duty Emery cut-off wheel #420, 1-1/4-inch cut-off wheel #540.
– For grinding: 5/8-inch aluminum oxide grinding stone #8193, silicon carbide grinding stone #84922, aluminum oxide grinding stone #932, aluminum oxide grinding stone #952.
– For sanding: 1/2-inch drum sander #407, 1/2-inch 60-grit sanding band #408, 1/4-inch sanding drum #430.
– For polishing: bristle brush #403, felt wheel #414, polishing compound #421.
– Miscellaneous: mandrel #401, mandrel #402.
In addition, the box also provides a lawn mower and garden tool sharpener, which some people may find really handy. The charger is included, too, but without an additional battery pack.
As you can see, Dremel 7300 has far fewer accessories, which is not surprising considering the inherent limitations of the unit. This model is only suitable for light tasks, so you don’t want to equip a cutting or grinding wheel on Dremel 7300 in the first place. Meanwhile, Dremel 7700 does not come with special accessories for pet grooming, but such accessories can be purchased separately. The included items of Dremel 7700 are for tasks like cutting, grinding, and sanding.
Either way, you need to use a wrench in order to swap the accessories. You need to unscrew the top in order to insert the bit. Afterwards, don’t forget to tighten the top to secure the bit in place. Both Dremel 7300 and Dremel 7700 are compatible with accessories that have a shank of up to 1/8″.
When buying a rotary tool, even if it comes from a renowned name like Dremel, don’t forget to check the warranty information. In case that you get a defective product because of any reason, knowing the warranty rules in advance can save you some money and effort.
Both Dremel 7300 and Dremel 7700 are backed by a 2-year limited warranty, which is great. The warranty remains valid as long as you don’t abuse or make improper modifications on your rotary tool. The Warranty & Repairs page on Dremel’s official website provides some useful troubleshooting tips, but if you can’t fix the problem by yourself, you can ship the cordless tool along with the battery, charger, copy of the proof of purchase, problem description, and owner contact information.
Dremel 7300 vs 7700
Between these two models, Dremel 7700 is more recommended. It is a more versatile rotary tool suitable for light, delicate tasks as well as heavy-duty uses. The low speed setting is still suitable for pet grooming, whereas the high speed setting can be handy for sanding, grinding, and cutting. It also comes with a wider range of accessories.