Hi all,

As the title suggests I have a CTC 3D Printer that the filament is slipping in the feeder. Here is the background My printer has been working fine for over a year and I have had very good prints from it (I only print in PLA from Rigid Ink). However just over 2 weeks ago I started getting a problem in that the filament was no longer extruding. I took the fan and heat sink off and watched as I loaded filament in the left hand block. It started to load and was pushing out of the hot end then randomly it would stop gripping the filament for a few seconds then start again.

My printer set up is as follows:
Upgraded to Sailfish Firmware
Moss Fet added for cooling fan!
Hot end cooling fan installed
Both feeders upgraded to the Mk8 tension feeder.
PTFE Feed tube from Filament to Feeder
This is what I have tried so far, All of this has been done with the cooling fan for the hot end removed

Cleaned the teeth in the feeder gear
Cleaned the V-shaped wheel in the feeder
Swapped the spring for softer and tighter springs
Checked the wires for any loose connections
Swapped the toothed gear from the right stepper motor to the left one (I don’t use the right nozzle)
Stripped the throat and nozzle down and cleaned them out over a flame
Checked the throat and nozzle for any blockages or defects
Fitted a new throat and nozzle
Checked the PTFE tube in the throat for any pinches or flattened ends.
Tried sliding cold filament through the throat and it flows easily
Tried 4 other filament rolls that have been stored in Vacuum sealed bags with desicant inside.
Tried altering the heat setting from 195 up to 220 in steps of 5c
Tried to feed filament on the right nozzle (Same problem)
None of the above have solved the issue so far. I have taken the nozzle off completely (and the fan and heat sink so I can watch what is happening) and when I load filament via the menu on the printer it will feed filament without any issues. As soon as I put any throat and nozzle on the printer the problem comes back at all temps tested. I only have a 0.4mm nozzle and this is what I have always used.


Thanks in advance.

So I have found the solution and that’s to install the mks sbase v1.3 board in the printer, the problem is I don’t have the first clue on how to go about this. I have found 1 video but it’s in German and I don’t speak a word of German. Can any help in either translating the video or does anyone have any experience in installing the mks sbase v1.3 board in to a CTC 3D printer (Makerbot clone)

Thanks