Clicking and Popping sounds from hotend  

Re: Clicking and Popping sounds from hotend

Moving the printer should not cause issues with the extruder or hotend unless you changed the location for the spool. Recalibrating the printer after moving it should of been sufficient. What do your retraction settings look like? Does your spool move freely on the holder? I had constant extruder slipping (the clicking sound of the hob gear) with a Delta printer that had a sharp edged spool holder. This causes excessive force needed to pull the filament which in turn lead to inconsistent layers as well as jamming. You can also check the tensioner for the extruder and ensure it has proper pressure applied so the hob gear is slightly digging into the filament and leaving small lines but not so much that it causes crevices and curls it.

Re: Clicking and Popping sounds from hotend

The spool rotates freely, and the filament gets pulled into the extruder smoothly. I've adjusted the idler screws according to the manual (12 mm compressed spring length, if I remember correctly). However, I cannot turn the bearing with my finger now. I wasn't sure if I should be able to turn it at all, but I've left it like that since the prints came out succesfully so far. Should I release the extruder idler so I can barely rotate the bearing or should it stay like recommended in the assembly manual?

My printer overall prints good, I haven't used it much since I only got it last week but all the prints so far were succesful (one was with supports and one was a large, thin object 200 x 180 x 3 mm overall dimensions). The only thing is I get weird sounds out of it. First there was this chirping sound from extruder pulley motor, then my bed was producing louder vibration noises when it moved towards the Y-stepper (bed was completely level, measured it twice, so I thought maybe the slide rods for the bed bearins were a bit bent near Y-stepper but that noise is gone now) and now yesterday the crakling sound happened but only for the first 7,5 mm out of total 23 mm print height. I'll check the assembly once again, if needed I'll release the extruder idler a bit but since there are no printing issues so far, I can't grasp what might be causing this.

Re: Clicking and Popping sounds from hotend

hello,
Hello, I understood why there is a strange sound.
Because look at our table. As it is tightened.
There goes a nut and a washer that is adjacent to the bed. Think faster, the nut is badly tightened and the sound is transmitted throughout the bed. we have them 6 pieces . They all look tightened but at in certain resonance (i dont say faster or slower print speed) the whole table starts to make vibro-sound.
So these washers must have another anti-vibration washer that touches the bed.
we never touch this nuts because they already assembled on the bed, we just screw bolts through the black y carriage .

please comment !

Re: Clicking and Popping sounds from hotend

OK, I'm printing the same part that I printed yesterday, only this time upside down (messed up the supports) and I get the same thing again. Clicking sounds and they happen on filament retraction. And only when it's printing layers that have supports in them. Once it passes the line where supports end, the clicking stops completely.

This is the first time I've used supports, all my previous prints had none and it never was clicking.

So it only happens while retracting and printing supports. Does anybody have an idea? The print quality seems untouched, but it's annoying as hell.

Re: Clicking and Popping sounds from hotend

So it only happens while retracting and printing supports. Does anybody have an idea? The print quality seems untouched, but it's annoying as hell.

Are you using Z-Lift and if so, how much?

Peter

Re: Clicking and Popping sounds from hotend

This is my first print with Cura and as far as I saw, there is no Z lift available in it?

I've just had a chat with support, they've suggested a very logical thing which I didn't think of, but you were probably thinking of it - the nozzle hitting the top of vertical supports and flicking them.

Which is absolutely possible since the clicking stops once the printing of vertical supports stops.

Now the retractions have no click either.

Re: Clicking and Popping sounds from hotend

Cura does have Z-Lift. Problem is I don't know where as I only use 15.04.6. In that version it is under Quality/Enable retraction (button)/Expert config/Z hop when retracting.

Peter

Re: Clicking and Popping sounds from hotend

Oh that's Z lift for Cura? I'm not familiar with all the settings yet, only had the printer for a week. Anyway, yes, it's in the settings but it was turned off by default.

Re: Clicking and Popping sounds from hotend

OK, set Z-Lift to 0.5mm and retry the print.

Peter

Re: Clicking and Popping sounds from hotend

i think the click popping sound is more like moisture in the hot end spitting, possibly the filament has absorbed some moisture?
gust guessing but thats what mine sounds like.