i have just purchased a wanhao 5s and its worked great for the first month. now i start a print and it prints perfect for about 3 hours and then the filament just stops coming out the nozzle and the printer continues to print in thin air.
im using pla,temp 200 - 210. the hotend does not loose its heat. the feed system on the back continues to push but the filament does not come through the nozzle. it just grinds inside the feeder. every print starts great and it does exactly the same thing every time after around 3 hours.
i have no idea.
any help would be helpfull. thanks
I have had with my set of D5S the same issues. The problem in my case was that the guiding pipe/hole where you screw the nozzle in to is jammed with old filament. You need to clean it by heating it and push it trough it. First without nozzle than with nozzle.
Kind regards,
Alexander Hoogerwerf
AEH Concepts
3D Printing - Productdesign
Industrial Design Engineer
You definitely must have a clog in your extruder. Look at removing the extruder and cleaning it. I am not an owner of a 5s but it appears to be a common problem with extruding, clogging. You might have to clean the feeding screw as it may be overwhelmed by filament particles stuck to it. Once you get your extruder clean run some cleaning filament through the extruder before you load your filament. I had that happen once on my Wanhao i3 and the above maintenance took care of the problem.
Just curious because my printer came like this… Check your cooling fan heat sink. Not the filament cooling fan. The one that comes in from the side of the extruder/hot end-heat block. My heat sink was installed backwards from the factory with the flat surface towards the fan and the edges of the fins against the heat block. Took me a short time to figure out that too much heat was moving between the extruder and the tube. Caused the filament to melt into a blob right before it was pressed into the tube at the top of the hot end. I have a MK10 - I’ll try to post a picture of how it’s supposed to be. In the attached picture it is assembled correctly. Note: fan > white spacers > flat surface of heat sink that fits flat against the block.
Brian

We run the Duplicator 5S and 5S mini and I know exactly what you’re talking about. Print at 220 and see if your problem persists. I don’t think the hotend reading from the Duplicator 5S is correct, I generally add 10 degrees onto whatever the requirement is for filament and I won’t have problems. For instance I was printing alloy 910 and it recommends a temp between 230 and 250. I had to set it to 255-260 otherwise it’d get clogged mid print and just print in the air. Get some bbq screwers and some nozzle cleaning pins and that will help you declog the nozzle.
If you’ve just purchased it i’d recommend returning it if possible. If you do decide to keep it buy a ton of the pneumatic fitting 6mm tube with 1/8" thread and ton of nozzles, which are proprietary and unreasonably expensive. You will need tons, as the pneumatic fitting will loose its teeth over-time and it’ll stop feeding filament into your hotend.
same on my 5s mini. it appears that if I manually push the filament through though it comes out the nozzle fine, so I don’t think ive got a blockage, its just not feeding. same when loading - I have to push the filament through on the back - it wont grip and push/pull it through, and this is before it reaches the printer head so I’m fairly sure the problem is not related to the print head setup
any ideas?