http://www.thingiverse.com/thing:277394/#commentsВот список рекомендаций для устранения звона:
There was no single thing. There are tons of little changes that contribute to reducing the vibration. For starters, knock off your acceleration and speed. Everyone keeps lusting for speed when there is no reason to - you're not producing parts en masse in a factory, there's absolutely no point in going over 50 mm/s. Don't reduce the acceleration too much or you'll start getting blobbing, but anything above the values required to avoid that is unneccessary.
Tweak the belt tension. High tension = precision and vibration. Low tension = increased positional error, but decreased vibration. Find a happy compromise between the two. Add gaskets between the steppers and whatever you're mounting them on. Depending on your linear motion system, increase the friction. Your steppers will heat up more and require more current, but the friction will dampen the vibration greatly. Isolate the extruder with cork or adhesive gel tape. Add feet to your machine, but make them layered - layer of foam, layer of gel, layer of cork. The objective isn't to make your bot immovable, but to make it wobble on the feet, as that will absorb the vibration.
Again, lots of little things. Also, bear in mind they'll be short lived. Most of the improvements i've made 9 months ago have seemingly evaporated - the belt tension changed over time, the layers of padding compressed, etc. The only "permanent" tweak is reduction in speed and acceleration.
Final note: the more rigid your machine is, the more vibration you'll get. I'm using an ORD Bot, which is as rigid as it gets. There are no plastic parts connecting the metal ones - whole machine is one big bell. You can feel the Y stepper vibration in the X gantry quite clearly, as there are no transitions between materials to soak the vibration up. Rule number one in isolating anything is - the more transitions, the better. Also, the more rigid the machine, the higher the resonant frequency.
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