I’m having stripping issues with this extruder was thinking about switching to a different one any suggestions
Looks beautiful. What makes you think the extruder is the issue rather than the hot-end. The simplest fix I can recommend for the hot-end is to insulate it. Mr-Clean Magic eraser, or clones of this (Melamine? foam) is excellent. $1 at the dollar store. Just wrap the heat block with a thin layer of foam held by kapton tape. Also… muffler putty on the heating element to try and help thermal conductivity to the block?
One word. Bondtech-extruder.
Well I started with a E3d and went to a j-head hoping it would stop the striping. Made sure the heat is at the right temp and changed filament so the only think I haven’t changed is the extruder. Alright Eric I’ll check that one out
@Eclsnowman looks like it’s still in beta but I wouldn’t mind having one looks like it’s a good design
Can you push the filament through by hand? Was it a real E3D or clone? We had a clone that we could push filament through for about 3 inches then it would seize up. Had to ad PTFE tube inside although that isn’t the best thing but it made it work. Same thing with another completely different extruder. Does that one already have a PTFE liner in the tube right above the heater block? Is the extruder steps per mm set right and not running too fast?
Yes real E3D. I have played with the steps to a point it were it is almost not moving. It would extrude for about 3 to 10 inches and strip out. Changed to the J-head and I can make it to about 30 or 40 inches but still just seem to be having problems @James_Armstrong
I was having stripping issues with my E3D v6 but it turns out I had two issues. First was not enough pressure on the filament so the hobbed bolt would strip out. The other was cheap filament that had poor tolerances for size/shape. After getting the pressure dialled in better and moving to ColorFabb filament I’ve had not as many issues.
Are you cooling your hot end at all? In my experience stripping that happens after a period of time tend to stem from heat creep. Making sure the thermal break keeps cool will help. Also run the filament through a paper towel with vegetable oil on it. This helps with drag.
@Mark_Rehorst I do have the springs tightened I have tired various tensions. @Don_Grunloh im not cooling the hot end anymore since I’m using the J-head which doesn’t need one. That’s an interesting idea with the oil never heard of that might give it a shot. @Steve_Hogg I have am going to be testing some different filament in the next couple days that I just got because I’ve been thinking it might be the problem. The filament I have tried all came from the same company
I don’t think you could ever cool the cold end enough.
Which one the E3D or J-head @James_Armstrong
Both. I think most hotends start to jam when the cold end (connecting tube from heater block) warms too much and the filament gets soft and is harder to push.
I had the same issues, first thought about the Bulldog extruder and finally came from the hotend (E3D v6). Cool the cold tube. Take of the filament after each print, cutting the end of the filament and load it for a new print. I not have issues since 3 months.
Have you checked the drive roll on the bulldog? I’ve gotten some from a few companies that where not properly hobbed and caused uses like you are describing.