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Hotend clogged need help

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hey i have my malyan M200 for not even a month and i really love that thing but at the moment im facing a problem. it seems like i have a clogg in my hotend. i already checkt my boden tube an my nozzel and the arent the problem so now my only guess is that it is the hotend. i cant pull the filimant out and of cours it wont go through. Has anyone an idea or even a solutions. while im writing this im playing with the thought to get the hotend out of my maschine but i wantet to check for help first.

I have had this issue before, more than once, and the video below is a good place to start. As long as your hotend still gets hot, you should be able to melt the filament enough to push the clog though. If not, replacing the hotend is not that difficult, it feels scary at first because it's a $200 printer that you don't want to mess up but they are fairly sturdy and well made.

https://www.youtube.com/watch?v=Pgsq297zdAs

Over time you WILL have to replace the hotend (it gets really hot and will wear out). I have had to replace the hotend on multiple types of printers and the M200 is the easiest.

One thing I have found that helps to prolong the life of a hotend as well as prevent clogs is to push a bit more filament though the hotend after printing and then retract the filament out of the hotend. This can be done manually, or you can add some gcode to the end of the print file to do it for you. Unfortunately I don't have the end gcode on hand so I can't just give it to you, but it wasn't hard to figure out; google.

Ok i just opend it up and sadly there was nothing ind that little part.

The first time I changed filament, I couldn't poke the new filament through far enough. I pulled off the top tube, no blockage there. But I noticed the intermediate white tube has a bigger inner diameter than the hot end nozzle. So I tried again after tapering the end of the filament to almost a point. Then I was able to push it in far enough for it to work. Twisting the filament around a bit while poking helped.

So please take everything I say with a grain of salt because without actually having the printer in my hands I can only diagnose so well; having said all that:

If you remove the fan from the heat sink you will see two (2) small hex head screws. If you loosen the bottom one a little bit you can remove the hotend from the heat sink. The hotend will consist of a heater (red wires), a thermistor (white wires), a heating brick, nozzle, and stem.

Hold the brick with pliers or a wrench and remove the nozzle. GENTLY remove the stem (this stem is not something I have been able to find a replacement for). Take the nozzle and stem and bake them at 450F for 30 minutes to loosen or possibly completely melt any filament clog.

Reassemble. When you reassemble you need to make sure to tighten the stem in first and then tighten the nozzle. If the stem is not tight enough, material can be forced out of the stem end of the brick.

I am assuming you are using PLA filament. If you are using PLA, 450F will pretty much eliminate your clog. If you are using ABS, please be aware that ABS is HIGHLY toxic when heated to its melting point and shouldn't be done in your kitchen oven. I have not used other types of filament and as such have not bothered to assess material safety standards.

Is there suppose to be a white tube in the stem?

The bowden tube should not pass through the heatsink to the hot end. There will be an air gap of about 12mm until the filament enters the brass tip in the heater block. I have had to heat mine to about 230 , hold the filament release lever and push/pull the filament until it begins to ooze.

well the problem remains just put everything back together.

does anything at all come out of the nozzle when you push filament into it?

when you had everything taken apart, was there any obvious blockage in the nozzle or stem?

when the filament is pulled into the printer it can become statically charged, attracting dust and such so it is possible for something other than filament to naturally find its way into the nozzle, which is 0.4mm and clogs easy.

when you baked the nozzle and stem, did you clean them out thoroughly?

i am sorry if my advice has not been helpful. ultimately, what did me the most justice was to take it apart and just figure out how it works and that made it easier to determine supposed to happen and what was not.

good luck!

Yes. This tube will resist high temperatures so you have to worry about it melting.

As the filament is forced into the hotend it begins to soften and as is softens it looses structural stability. The white tube helps to prevent this.

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