Guys! I have got a problem with my hotend. Filamant tend to get stuck inside it on a very regular basis. Once that happened, i will disassemble the hotend to clean the nozzle and get all those residue filament out of the hotend. Can anyone suggestion what seems to be the problem here?

Thank you.

Argh!!! I broke the thermistor on my hotend. Anyone know how i can fix this?

Thank you.

Elo guys!

I am here to update everyone regarding the issue I have with my printer.

To keep this short, my printer seems to have this problem of filament clogging the hotend resulting in incomplete or no print at all. The printer seems to be functioning fine in the initial stage but after around 1 minute into a printing session, the dreaded sound of the extruder grinding on the filament can be heard. By this time, little or no filament will come out of the nozzle.

Initially i thought it was something to do with the filament quality so i swap the filament from another source and yet it stills clog up the hotend. After that i went to the trouble of cleaning the filament off dust cause i thought it might be the cause of the problem and yet the problem persist. I tried to manually push the filament into a preheated hotend and the filament seems to be able to pass out fine.

Next, i tried to clean out the hotend which i thought must have some residue filament inside clogging up the component. So i disassemble the hotend and clear the filament pathway as best as i could. Still the problem persist. I even go through the trouble of borrowing a new hotend from a friend of mine and yet it doesnt work.

Last but not least, I checked on the extruder stepper but there wasnt any problem with it too.

So after accidentally snapping my old hotend in half, I have yet to find a solution for my problem. Any advice from all the seniors here?

Thanks in advance.

It is a Blomker custom hotend. PLA all the way for me.

Increasing the stepper motor power? How do i actually do that? Is it the same if i were to increase the flow of filament?

Yup, there is a teflon tube inside the throat but as far as im concerned it didnt block the filament from entering the hotend. I actually tried to use a different hotend which doesnt require a teflon tube and the problem still persist.

PS. I went back to reexamine the printer last night and found out that there seems to be an issue with the part of the extruder which is suppose to hold and feed the filament into the hotend. The bearing does not seems to be moving sometimes so instead of guiding the filament into the hotend, it ends up pinching the filament in place with the stepper on the extruder grinding away the filament. I took this component apart and lubricate the bearing. Managed to print a small item without any issue after that but i will need to conduct a few more runs to make sure that i have managed to get rid of this problem.

Thanks for the help anyway.

No, i didnt reflash the board. I figured out that was a bit too much trouble and work for me so all i did was separate the arduino from the RAMPS and later power it up using the USB and press the reset button which was on the board. Didnt thought that it will actually work but try it out anyway cause i am down on my last leg.

Do you guys actually go about modifying your barrel all the time? I guess it can be done with the right tool but it is going to take time and effort for me to do it. OR should i just go look for another more reliable hotend which doesnt and shouldnt clog up too frequently? Any suggestion on what type of hotend should i get? I have my eyes on this but not sure if it is good though.

Thanks again.

Hotends with PTFE tube inserts works well with PLA but all-metal ones are good for ABS. Higher temp filaments require all-metal hotends or else the PTFE will wear and melt/burn from prolong heat exposure.

ABS is usually cheaper than PLA, any other way to swap it in a fair manner?

let's say for a beginer with rm3000 budget
where to get one without the hassle of buying it from overseas?

check your cooling fans, it still running normally?