X-axis vibrations

[picka]

I'm having issues with vibrations in the x-axis when the hot end is moving away from the z spindle only. Turning up the current to the stepper makes it slightly better and tightening the belt makes it slightly better but I can't make the belt any tighter. Is there anything I can do to fix this? Sometimes it gets really bad and the nozzle bounces along the printed part.

[Kjetilei]

picka: This sounds quite like the problem I had earlier where the extruder would vibrate when moving away from the z-axis spindle. I never managed to get rid of it properly but PTFE-spray on the Igus bearing helped. I believe it was caused by unoptimal tuning (read:kapton tape). If you are lucky with your Kapton tuning you might hit a sweet spot where the glider does not bind and slip rapidly.

[Geertjan]

Hi Picka. I experienced a lot of vibration on the x axis too. PTFE did not solve the problem. I finaly disassambled the slider. It is a laborious job because you have to remove the extruder and turn the rails a bit before you can slide the slider out. I found a sliver of plastic in the slider. And I replaced the kapton tape. After reassambling the x axis vibration was at an accaptable level. Since the new 1.5 upgrade of the printer has new sliders I'll wait for the upgrade. Lets hope that solves the problem forever.

[picka]

Thanks for the reply, I'll try what you suggested. Yea it seems like the x-carriage has a fair bit of rotational play about the x-axis. Since all the weight is on one side of the slider (stepper motor), the contact points within the slider are all over the place.