I just got a ctc dual extruder Gen 2 the black wood framed model. I’ve been printing with it for about a week and a half now I got all the settings down to where it was printing beautifully. Then yesterday it started clicking on the left side aroung the pulleys and bearings the move the y axis. It makes me worried that something will fail I’ve heard the pillow block can help I’ve printed them out. I just want to know what the cause is and if there are any other measures I can take to help eleviate this problem

I make sure I lub the bearings regularly and clean off the dust that collects on the gantry. Anytime I hear clicking i think extruder but you say it prints great. Move it by hand and make sure everything moves smooth.

lubricate the pulley

Yeah the extruder was my first thought also I pulled it apart cleaned the nozzle and continued to print Valentines for my daughters class. And they came out real well but while watching it for the jam was when I noticed the popping would still happen once ever 15 to 20 mins from the left side. Now that the prints are done I’m gonna take off the left side put in pillow block and lube the bearings. I’ll take more pics after and let you know if there are any changes. The pics below are of where the sounds coming from and how the prints came out. .15mm layer height 50 mm/s, and 20 ifill the valentines look good thats why im baffled.

Any update on this man? Mine is doing the same thing on the left, rear side… Not sure what the hell is causing it.

Ive come to the conclusion that its the bearing the y-axis drive poles sit in. The bearings have a defect in them so are a time they wear down and start to click. I’ve regeased them yet no avail. They need to be replaced with sturdier ones. I’ve just had a hard time finding the right ones with a flange. It won’t hurt your prints much besides the random woble and annoying pop if you don’t fix it right away. So I’d recommended replacing those bearings and putting in pillow blocks if you can. And please send me a link if you find the bearings online. I know they are 8um but not the exact kind.