Dremel 7700-02 MultiPro 7.2-Volt 20,000 RPM Two-Speed Rotary Tool with 50 Accessories

The battery, though, is what makes it both unique and frustrating. Of course being able to use the tool unfettered by a cord is great, and it does recharge reasonably quickly in about three hours. On the other hand, the motor is not as powerful as the corded variety, and the speed is not continuously variable. I haven't yet found either of these to be a problem. But you cannot get a half-hour of use out of a fully-charged battery. Fifteen minutes is more like it. This is plenty of time to practice home dentistry skills on the dog if you are so inclined, but it means that unless you have a battalion of extra batteries at $26 a pop you will not be able to grind out all the grout in your bathroom, cut more than ten ceramic tiles, or buzz off more than a few square inches of rust from your car from a single charge. If you are buying the tool for those sorts of projects you need the corded flavor.


Extremely useful gadget   October 9, 2001
Mark F. Miller (Philadelphia, PA United States)
66 out of 66 found this review helpful

I have a line powered Dremel but I most often grab for this rechargeable unit because its easier to handle without the cord. It is great for tight spots in the car. I recently upgraded the intercooler piping in my car and needed to enlarge a 2" hole to 3" diameter. I just used the cordless Dremel to make numerous radial cuts and bent the "tabs" back. I would have gone nuts trying to cut that out with a hack saw or file! I always use it at the full 15 krpm speed and don't miss a variable control at all.

My friend lost his special "antitheft" key wrench for his license plate mounting bolts. I just used a cut-off wheel to make two cross cuts in the (round) bolt heads, and unscrewed it with a Phillips head screwdriver. Without a Dremel, it would have been tough.

The battery life is short, but I always have an extra charged battery ready. If I'm working with it alot, I just rotate the batteries through the separate wall mounted recharger.

It can also be used as a printed circuit drill or for other small precise drilling. Much easier to handle than a typical hand drill for light work.

It does kick up some metal bits so use eye protection!


Dremel 7700 MultiPro has one major flaw   June 30, 2000
50 out of 55 found this review helpful

This tool could be great, but has a MAJOR flaw. The battery pack is designed such that it pops out of the tool with the least bit of pressure. The battery pack is actually part of the handle, so you can't avoid touching it when working w/ the tool. I found it very difficult to work with the tool for more than a few seconds before it shut down because the battery popped loose. I resorted to duct taping the battery in place. Eventually I got tired of this & I heated up the case with a butane lighter and bent the sidewalls inward to more firmly grip the battery. With this modification, (or with duct tape) the tool works fine. But you shouldn't have to resort to this sort of jury rigging. If the product people at Dremel had actually used this tool, they could have identified and cured this problem.


Know your purpose--not for doggy toes   November 13, 2004
C. Circle (Northern VA USA)
35 out of 42 found this review helpful

I bought this tool from another company as a dog nail grinder. However, there are other Dremels better suited for this purpose. Also the product specs on Amazon are not always correct--double check first on the Dremel web site. This tool is currently spec'ed for 10K and 20K rpm. For puppy dogs slower is better as the friction is less and the nail does not get hot as quickly. Best tool would be something around 5K rpm. I think that's the slowest they sell. Some reviewers complained about the 8000-01 Lithium-Ion Cordless so maybe the 7800-02 9.6V Cordless MultiPro is a good bet, though I have seen good reviews on the 750-02 MINIMITE Cordless Tool however it's slow speed is 6500. BTW, specs for the 761-01 Pet Nail Grooming Kit are not online at Dremel so I can't confirm if the Amazon specs are correct, you need the owner's manual to do that. Thanks! and Good Luck!!


Pretty good so far, though I haven't used it that much...   April 11, 2000
R. Beier (Plymouth, MI USA)
32 out of 34 found this review helpful

I bought this in a bit of an emergency situation and it helped greatly. We needed a tool that could do some "hand milling", shaping, and filing of some small plastic parts to finish a mechanical engineering project for one of my classes. It worked really well on the plastic but when we tried using it to smooth some metal threaded rods, we chewed through a few files before the job was finished. I'm glad I bought this Dremel though because I'm sure I will be able to find some use for it in the future. The fact that this unit is cordless is also a huge help even though the batter only lasts about 20-30 minutes when used.