![]() FSRTs also come with larger chucks, but this usually isn't relevant for cutting metal. I've also found that holding a Dremel can be uncomfortable, because you have to make sure not to cover the air holes that pass air through to cool down the motor. Another upside to the FSRT is that it comes with a foot pedal, so I can control the speed with my foot. While it spins only at half the no-load speed (18,000 RPM), I still work at lower speeds because the motor is quite powerful, unlike my Dremel where I need to turn up the speed to compensate for the weak motor. Since it has a large, external motor, it's much stronger, and I've never come close to overheating the motor, even after hours of non-stop work. The shaft is made up of a flexible plastic pipe that encloses a titanium coated spring which encloses a stiff spring-like rod which is what the motor rotates- all of which are flexible to increase maneuverability and reduce friction. There's a large external motor that rotates the handpiece (chuck) through a flexible shaft. ![]() ![]() With a Dremel, I end up wasting half of my time waiting for it cool down, after it overheats every couple of minutes.įSRTs are very different. Rotary tools - basically a faster drill, that cuts from the side? It's much more nuanced than that.Īfter starting with a Dremel, I've been using a Foredom flex-shaft rotary tool ( abbreviated: FSRT) for the past few years and love it! My Dremel spins at a no-load speed of 35,000 RPM, however the motor is very small and weak, so it bogs down very easily.
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