Titan Clicking...should I buy a Bondtech extruder?
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@tef9 said in Titan Clicking...should I buy a Bondtech extruder?:
I don't think its bad bearings as I bought the Titan in Oct 2018
Trust me, the date you bought it has nothing to do with the bearings being crap. They may have fixed some of the issues with original bad bearings and lubricants, but the design itself is very hard on the bearings it uses. It's also incredibly easy to overtighten and damage them. If you disassemble the heatsink you can check the bearings for any leaked lubricant, which is a sure sign they are damaged. Even if there is no visible signs, taking the bearings out and rolling them in your fingers will quickly let you know if they are still rolling smooth or not.
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They all seem to rotate fine, no issues. Maybe its temperature or a blockage?
I will investigate, I am not a professional film director but here is some shaky cam footage of the clicking while printing.
Best,
Andy
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@tef9 Yes, I'd say that's grinding away at the filament because of some sort of restriction in the hot end which could be temperature or something else. What you hear is the sound of the filament skipping. TBH, although a Bondtech will likely help because it has two hobbed bolts to grip the filament, it isn't the root cause of the problem.
Edit. Gentry pinch the filament between a finger and thumb just where it enters the extruder - I'll bet you can feel it jumping. Try increasing the hot end temperature or printing a bit slower.
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I think you might be right, either way I have another extruder and another hot end, so my multiple colour set-up is getting closer
Just don't tell the wife
Best,
Andy
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@tef9 All the filament dust that's been packed into the drive gear is going to cause very uneven extrusion because it will prevent the drive gear from biting into the filament consistently. That dust is evidence that the extruder is having a hard time pushing filament through the hot-end/nozzle.
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@tef9 Yes looks like it could be a partial blockage in your hotend, have you calibrated the extruder?
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It also looks like the drive gear isn't aligned properly with the larger gear. The faces should be flush. You may also need to adjust the larger gear on the hobbed axle to get the filament path lined up with the center of the hob.
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@phaedrux said in Titan Clicking...should I buy a Bondtech extruder?:
It also looks like the drive gear isn't aligned properly with the larger gear. The faces should be flush. You may also need to adjust the larger gear on the hobbed axle to get the filament path lined up with the center of the hob.
Good catch. Looking again at the video from about 22 seconds, it looks like the big gear isn't running true. It seems to vary between being close to the front edge of the smaller gear to being close to the back edge. It might just be variations in camera angle but it looks like the large gear isn't square on it's shaft.
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Oh boy...so where to begin...
So the extruder after a little persuasion runs a charm, I still have a Bondtech on order but that will be for a second head
I had a fan at the front of the head running full belt...all the time, despite me thinking I had set it to be based on PWM. Either way I was happy to unplig it for now as I have two other fans running either side (which are controlled by PWM...they are currently off).
I took of the silicon sock, and there was plastic everywhere, I decided to do a quick check of my setting with the M303 H1 S250 1. It all went to plan, except there was smoke...very strange. I could not find the source. either way when I used the temp gun...it read at about 10-20 deg c less than the thermistor. After the fourth phase of the tuning i got this message:
**20:20:36
M307 H1
Heater 1 model: gain 456.8, time constant 353.5, dead time 3.3, max PWM 1.00, calibration voltage 24.2, mode PID, inverted no, frequency default
Computed PID parameters for setpoint change: P41.7, I1.217, D96.7
Computed PID parameters for load change: P41.20:13:55
Warning: Heater 1 appears to be over-powered. If left on at full power, its temperature is predicted to reach 481C.
Auto tune heater 1 completed in 588 sec
Use M307 H1 to see the result, or M500 to save the result in config-override.g**I then noticed as cleaning of the plastic i could move the head very slightly...I am now waiting for it to cool...either way a much more exciting experiment than I thought I would get
I will dismantle the head and reseat everything, hope I did not damage anything inside the Nozel X
Best,
Andy
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Did you do a hot tightening of the nozzle after installing it?
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Eeek no, how hot should it be?
Best,
Andy
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@tef9 For an e3dv6, they use 285C. You need to use M143 H1 C300 to get to that temp for heater 1. https://wiki.e3d-online.com/E3D-v6_Assembly
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Don't worry about the temperature gun. They are all but useless for reading small spots, and are theoretically calibrated for a specific emissivity material, though the cheapos aren't calibrated at all.
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All,
I have been busy trying various thing...one of the problems I found was the heatbreak was not tightened and when hot seemed to unscrew.
I am now going through the config.g and found various issues I have fixed. I did find the attached in the nozzle. A nozzle X no less.
Best,
Andy
