Solved Stop extruding with new extruder

I had to replace the original extruder with the Hexagon Hotend (purchased at Robo3D).
It extrudes fine but after 20 seconds, it stops extruding. It seems that the screw is sliding on the filament.
I checked the hotend and the filament does not slide very well into it. The mechanical tolerance must be very small.
Unless there is another problem ?
I attached the picture of the filament after I extract it. Any idea ?

 

Are you sure your temp is hot enough? Different hotends can require different temps.

 

I also think it is too cold.
Do you know if the firmware must be modified when you change the hotend ? (from the original hotend to the Hexagonal one)
Maybe the thermistor has a different sensibility ?

 

What hotend did you have before? The R1 comes with a hexagon already? Or do you have a beta?

Thermistor setup in the firmware should be as follows in configuration.h for the hex hotend and thermistor. This sets it to a 100k thermistor.
#define TEMP_SENSOR_0 1

 

Also may want to do a PID tuning on the hotend, but you shouldn't be going cold mid print.

 

I have a beta. Black hotend

 

I just double checked the beta firmware and the thermistor settings are the same

Edit:
One thing to change at some point is your max temp setting. You should be able to push that up to 290 at least now.

#define HEATER_0_MAXTEMP 240

 

you probably already checked for any loose connections correct?

 

I am also assuming if that is PLA that you went through the steps of seasoning the new hotend and use an oiler? Did the terminal log give any error about temp or did you see any dip in temp during print? Not sure what software you are using.

 

I have disassembled the hotend and the filament is very tight in it !
What is the point of having it so tight ??
I am a bit fed up by the poor quality of all these components.
I could list all the issues I had and most of them are related to poor design or poor quality.

 

What does your filament diameter measure? I've not had any issues with the filament I'm using but wonder if it gets older and moisture gets into it if it expands a bit. If you have any newer or unopened filament I wonder if it would be closer to spec and would go in better. What type of filament are you using?

If you had bought the hotend from Amazon I would be suspicious of it being a knockoff, but since you bought it from Robo3d I would think it would be of better quality. That is unfortunate if it is the hotend.

 

I heard they are sticking with the Hex for the R2/C2 printers. Would have been nice to see them go with the E3D V6.

 

I have Robo3D filament but they are quite old. I have one unopened but it is ABS.
I'll take my calliper and advise the diameter.
What hotend do you suggest instead of Hexagon ? Something that fits my actual printer with not too much DIY. Also keep in mind that I have the auto bed levelling with the induction sensor and I don't have space on the right of the carriage.

 

the E3DV6 cost 43£ where the hexagon is 39$. This is quite the same.

 

http://community.robo3d.com/index.p...ormation-installation-guides-and-review.3407/

Mike Kelly explains very well my issue in that thread. The tolerance of the Hexagon is very small.