Unresolved Extruder heat loss issue.

Hello again! The issue is that when I heat the extruder and the bed up to the proper temperature and go to print, it rapidly decreases in temperature. I recently cleaned it all up, so I know that there are no jams or severed wires or whatnot.

My printer has been broken for about 2 weeks now, and I'm getting really tired of this. Ive gone through issue after issue, and more problems are constantly popping up. This seems to be the last error, so I'm really eager to get this fixed if you couldn't tell. Thanks in advance.

 

If the bed is not at temperature when you start a print it will disable the heater for the extruder causing it to drop.

Open terminal and watch for any errors to pop up

 

I already made sure that both of them were up to temp. It also gives me the error "Error: Extruder switched off. Temperature fell too much during print! [26.191]"

 

Yeah... well long story short, my boot came off so I've been using a mix of Teflon and Kapton tape to hold everything together. I'm not sure if this changes anything, but I felt it worth mentioning. Anyway, I will readjust the thermistor and add some more layers and get back to you

 

Well, I added a few more layers and it kept the temp up for the first layer, so thats promising. After that I added even MORE layers. I'm about to test it again right now actually.

EDIT: The second test didn't work either.

 

So yeah, its not a problem with the thermistor or heat insulation.

 

I am trying to picture what you originally said and a thought popped into my head.
Here's how it works. Extruder comes to temp, Carriage mover to center, This movement causes the heat to drop at the extruder and it just sits there waiting till the heat goes back up. This is normal. Just a thought. Frank

 

It would be normal, except that the temperature doesn't go back up. It just keeps dropping lower and lower.

I checked all the wires and they all seem to be fine. What are the most common reasons for thermistor signal loss? I figure I'll try out a few of those

 

Ok, if it turns out to be that, Ill definitely consider this! However, unplugging and then reconnecting the wires going to the hot end along with more Teflon Tape on the hot end seemed to do it a world of good. Now, if I just pause the print while its in the middle of auto-calibrating and let it get back up to temperature, it seems to work fine! Now I'm getting a totally different error, but thats something that I'm talking to the Matter Control support about.

Anyway, I just wanted to thank all of you guys here for helping me with my plethora of problems

 

No, but you're actually very close haha. I ended up having a two part problem: I didn't have enough insulation around the thermistor and that general area, and the fan that blows on the nozzle was kicking in early. I had noticed that before, but didn't think very much of it until yesterday.

 

I had the same problem when I modded to duel fans. I had to lower the speed in Cuba, or else my hot end couldn't keep up.

 

I have a shroud. Actually, it's this mod:

http://www.thingiverse.com/thing:821080

Also, glad you like the videos!