Topic: Z axis positioning fix
My 2nd gen solidoodle arrived 3 weeks ago with _very_ noticeable z positioning oscillations, even with .3 mm layers.
So far it looks like I'm not the only one suffering from these, so here's my quick and simple fix: adding a weight as close to the screw as possible (I used an old steel brick from a machine long gone ), decreases the artifacts a lot. Hope it helps.
Pictures attached, more lenthy text in english and russian in my blog here: ncrmnt.org/wp/2013/01/03/solidoodle-the-quickest-fix-of-z-axis-wobble/
I have come up with a (hopefully) better solution, but it will require to wait till the hardware shops open after the holidays here (in russia) are over. I will post the tests and the description of my second fix when I test it.