Filament refusing to feed.

[EagleSeven]

Nevertheless most (all?) replicator clones I know of are delivered with ptfe liners. If you have that kind of heat throat, the inner diameter is too large to use it without a ptfe liner regardless of the ptfe/all-metal debate....

Our CTC-Bizer did Not come with PTFE type tube.
No, the inside diameter of the steel only tube is the same as the inside-diameter of inserts.

Try 'em, you will Like 'em !

[cjalas]

High Lubricity Thermal Barrier Tube for MK7/MK8 Extruder (M6 threaded)

http://www.amazon.com/gp/product/B00ZMY4W76


This is what you want for your extruder throats.

[dlps73]

Unfortunately - doesn't deliver to Australia.....

[Alibert]

Our CTC-Bizer did Not come with PTFE type tube.
No, the inside diameter of the steel only tube is the same as the inside-diameter of inserts.

I stand corrected. This is the first time I heard of a rep clone with all-metal hotend. Kudo's to CTC.

[dlps73]

Thank you for all the replies and advice. I finally heated the extruder up to 240C and managed to melt/push the obstruction through - thanks again....

[M2ATG]

1) You have a clog. The ticking sound is the motor unable to extrude the filament.

2) Temperature is not high enough for the filament you are using. It's not melting so the motor will not extrude, which again makes the ticking sound.
Again the thermisters arent accurate, It might say 200 degrees on your printer, but the real temperature may be 180. You need to find the correct temps for each roll of filament you use.
When loading the filament, the extruder heats up to it's preset value. So increase the preset to increase the temp used for loading and unloading.

Hello guys.

Reading the thread you seem to have cured your problem. Any insight into any thing in particular as a fix?

I have tried to remove filament with the extruder apart, also tried excessive heat (Pre-Heat@250) in order to melt whatever is blocking the nozzle.

Not really sure how to proceed... dissemble and clean tubes / 0.4mm drill bits / Threaded feeder tubes / possible replacement parts.

Found UZTHEDENTIST on youtube with mods and fixes(ideas above).

This is my 2nd printer from CTC (printchainstore) that took them 5 weeks to replace. I have started proceedings on ebay, upon arrival of the 2nd printer the PSU Fan bearings sound warn and whine while trying to spin up, not sure if the fans have a cut off if there is too much resistance on them that they stop. Now the extruder failing to function. Has been a right game so far.

see my links to youtube videos:
https://www.youtube.com/watch?v=rkMYvZ1Iuvc

https://www.youtube.com/watch?v=CtkMNSur50k
https://www.youtube.com/watch?v=akfPGWbRdW8

Any help is appreciated.
M2ATG

[bigo93]

Are you sure that fan noise is from the PSU?

There is a small fan next to the motherboard, it is supposed to pass air over the heatsink in front of it, but apparently it does almost nothing to help.

So you can actually remove that fan.
Also because it is mounted to a short plank of frame, it can vibrate a lot!
I think this sound is actually that fan vibrating that frame.
Remove the fan or unplug it and see if the sound goes away.

[EagleSeven]

Are you sure that fan noise is from the PSU?

There is a small fan next to the motherboard, it is supposed to pass air over the heatsink in front of it, but apparently it does almost nothing to help.

So you can actually remove that fan.
Also because it is mounted to a short plank of frame, it can vibrate a lot!
I think this sound is actually that fan vibrating that frame.
Remove the fan or unplug it and see if the sound goes away.

Yes, I removed the very loud 40mm fan at Mobo and replaced it with a 120mm fan,
hung below the Mobo.
(used plastic tie-wraps to suspend there, since not much there to make a solid attachment,
after removing the plywood cover-plate, that is not needed)
Very quiet that way and larger fan cools Mobo better !

I also printed 4 shock-mount Feet, that raises printer up from table about 2 inches ,
which gives more space, for that 120mm replacement fan, under printer.
(file for Feet can be found at thingiverse.com)

Note: also added a removable Dust-Filter on Fan,
which the 40mm fan did Not have

[bigo93]

These feet? http://www.thingiverse.com/thing:916254

[Geoff]

Hello guys.

Reading the thread you seem to have cured your problem. Any insight into any thing in particular as a fix?

I have tried to remove filament with the extruder apart, also tried excessive heat (Pre-Heat@250) in order to melt whatever is blocking the nozzle.

Not really sure how to proceed... dissemble and clean tubes / 0.4mm drill bits / Threaded feeder tubes / possible replacement parts.

Found UZTHEDENTIST on youtube with mods and fixes(ideas above).

This is my 2nd printer from CTC (printchainstore) that took them 5 weeks to replace. I have started proceedings on ebay, upon arrival of the 2nd printer the PSU Fan bearings sound warn and whine while trying to spin up, not sure if the fans have a cut off if there is too much resistance on them that they stop. Now the extruder failing to function. Has been a right game so far.

see my links to youtube videos:
https://www.youtube.com/watch?v=rkMYvZ1Iuvc

https://www.youtube.com/watch?v=CtkMNSur50k
https://www.youtube.com/watch?v=akfPGWbRdW8

Any help is appreciated.
M2ATG

I bought my printer off printchainstore too, it seems they are selling second hand, refurbished and ex-faulty printers possibly - so far nearly everyone who has received one has had these problems. I had a long list, including a deep scratch in the aluminum bed and also a faulty extruder motor.

I had to use an electric guitar string and clean out the nozzle pipes specifically on the left extruder plus a tired old motor, they sent it out completely blocked and unusable without repair.

I have to say, overall this was not a particularly happy purchase for me.