SETTING HEIGHT PROBLEM

[wjrudo]

ARGGG! I've set my towers and z height as per the instructions. When I run a print, the hot end nearly gets to the table, then moves upward about 1cm...There is where it starts to print. I tried to calibrate the z height many times. Some times it slams in to the table, moves upward about a cm, then starts to print. It does this when i try printing from the SD card only. When i connect to mattercontrol via USB, it prints perfect. I've tried to SD print with cura and I get the same bouncing z motion. All the belts, etc are tight and the machine is in perfect mechanical condition. Does anybody have any clue as to whats going on here?

[geneb]

If it prints fine with MatterControl and not with Cura, you probably have a setting issue going on with Cura. Can you print a MC file via SD?

Also, you don't say what model/rev printer you're using - that can help.

tnx.

g.