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We purchased this Dremel rotary grinder for small projects and hobbies. I chose this model because it was inexpensive and could also be used for small grinding jobs on ATVs and vehicles.
The toolkit comes with a ton of different tool attachments, over twenty in all. The sanding pads and bit grinders work really well for hobby grinding and sanding, such as model trucks and airplanes. The fine-grain sanding pads actually did a reasonably good job on my small woodworking projects and didn't leave the same rotary marks that I get with a larger rotory tool.
The tools last a surprising length of time. I am notorious for wearing out my working tools much too quickly, but the Dremel tools last through many projects. Some, such as the cone grinder, have lasted several years and I am still using the original tool. I have had better success with these attachments than with those for other small grinding tools.
This grinder is certainly geared toward small scale project use. It has overheated a couple of times after a very extended period of heavier grinding, but generally it can finish a task.
Power output is appropriate for its size. The drill tools work well in low to medium hardness materials, but I have had difficulty drilling into harder surfaces such as cement, hardened ceramic and soft stones.
The drill motor has been very durable. As I noted, I am hard on tools and can usually burn up a grinder in a year or two. I've had this Dremel for nearly five years and it still works well. I use it about two to three times per week.
I chose a Dremel because of the attachment selection and because I'd read good reviews about Dremel products. I am very happy with this drill and if it ever dies, I'll buy another one.