If you are seeing the effects of something that looks like vibrations here are some tips I have found with my delta printer (It's a Rostock Max, I've got all the electronics for a 3DR I'm just saving up for the rest of the hardware) that haven't been mentioned.
My Rostock Max is fairly weighty with the melamine and all the electronics inside, I still improved my prints by clamping it down (there are some cork plates between it and the table) to the table it is on. VERY helpful at higher speeds.
Check the carriage arms. Rubber bands tensioning the arms can help remove some slop. Also consider looking into magnetic arms as have been done on some delta printers. They do a fantastic job at high print speeds. I don't know what material you have for the arms themselves, but there is flex the longer the arms are. I did a set of magnetic arms and instead of just using carbon rods I used arrow shafts while picking a set with the stiffest / lowest deflection the store had. I'd have preferred crossbow bolts, but they didn't carry those.
Hopefully those suggestions may still apply when refining your 3DR for high speeds. I hope to join you guys in the 3DR club soon!
My Rostock Max is fairly weighty with the melamine and all the electronics inside, I still improved my prints by clamping it down (there are some cork plates between it and the table) to the table it is on. VERY helpful at higher speeds.
Check the carriage arms. Rubber bands tensioning the arms can help remove some slop. Also consider looking into magnetic arms as have been done on some delta printers. They do a fantastic job at high print speeds. I don't know what material you have for the arms themselves, but there is flex the longer the arms are. I did a set of magnetic arms and instead of just using carbon rods I used arrow shafts while picking a set with the stiffest / lowest deflection the store had. I'd have preferred crossbow bolts, but they didn't carry those.
Hopefully those suggestions may still apply when refining your 3DR for high speeds. I hope to join you guys in the 3DR club soon!