Print is sliding.

[Albertipsen 0]

Hi

My Ultimaker Original has been on the shelf for some time. But I've booted it up, updated all software and firmware.

I successfully printed the Ultimaker Robot, perfectly.

Now, I've tried to print several other things. but it seems that the bottom layer, is sliding towards the front. I'm not sure if this continues through out the print.

Has anyone experienced this? Help is gladly appreciated thank you!

[nallath 1,125]

Re-thighten your pulleys. One of em is probably loose.

[gr5 2,333]

This is extremely common. It's your Y axis only. X axis seems fine. It's usually the pulleys as nallath says - most often the motor pulley or the other pulley on the short belt - tighten the hell out of these.

HOWEVER it could instead be friction. Push the head around in X and Y. Feel the difference. Oil the 4 rods in upper corners. Wipe all dust off all rods. Don't oil the 2 rods through the head but still you can use oil or wd40 to clean those (put something on the bed to keep it from getting oil dripped on it).