Falling build platform

[czucker 0]

I went ahead and cobbled together my own UM2 style build platform to use with my existing heated bed.

I purchased an aluminum platform, an 8mm 4 start lead screw and nut and the appropriate bearings (LMK12LUU).

Everything works perfectly, except for one small and really irritating snag. . . .

When the Z motor is off, the platform has a tendency to slide all the way down on its own. This doesn't effect my prints, but it can be really annoying when trying to level my bed.

Anyone have any thoughts on a solution?

Thanks,

Chris

[jonnybischof 60]

Afaik the UM2 avoids this problem by lowering the platform all the way down once the print is finished.

I don't have one myself, but I remember seeing this in videos.

I suppose this is part of the "End-GCode" for the Ultimaker 2 Cura profile.

Edited May 27, 2015 by Guest

[czucker 0]

That's interesting. I didn't realize that this was the expected behavior of the UM2. My UM, with the larger lead screw was always pretty solid with or without the motors powered.

For bed leveling, I guess the solution is to just make sure my motors are on.

Thanks Jonny.