#"Heater Extruder not heating at expected rate"

1 messages · Page 1 of 1 (latest)

ivory kettle
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Hi, I swapped over from Afterburner to a Stealthburner finally yesterday. I noticed today when printing PLA it would stall out once the fan kicked in, as it blows a LOT more air. Having this isue now on a PID tune, and this is with 25% fan and also 0% fan. (part cooling). Any suggestions on a possible fault? Thermistor? Heater Cartridge?
Voron 2.4, Phaetus Dragon HF with stock heater & thermistor.

lilac geyser
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repeat your PID tune with the part cooling fan running at the rate it was struggling to keep up

languid parcel
ivory kettle
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not yet. The hotend is just standard i haven't modified it, just using it with the standard Dragon STLs for SB

ivory kettle
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so something I'm guessing has failed, going to try swap the heater first

languid parcel
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are you using the same hotend/heater/thermistor as you did before?

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sounds to me like either a weak/broken heater, or too much resistance in the wires going to the heater.

ivory kettle
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yeah exact same, didn't touch anything just moved everything from the Afterburner toolhead to the Stealthburner toolhead after putting the upgrade off the past 2 years lol

lilac geyser
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worth making sure you have no odd bits in your extruder temperature configs either, like a max_power of anything else but 1.0

languid parcel
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make sure your connections are solid 😉

ivory kettle
ivory kettle
lilac geyser
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it'll error out if you do that

ivory kettle
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another guy just mentioned that it's taking 5 mins to get to 240 so most likely underpowered heater cartridge.

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I'll swap it out in the mornig and report back

silver pawn
ivory kettle
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will do, just didn't know where to put it!

silver pawn
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It tends to have a more specialized audience

ivory kettle
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ok great, thank you

lethal beacon
ivory kettle
# lethal beacon could u solve your heating issue in <#463171288853250048> or are u still in nee...

Hi,
Yes managed to solve it. I swapped it for another 40W heater cartridge from Trianglelab, it worked "better" but with no fan. Ultimately it seems as if my 4010 hotend fan is now funneled through the stealthburner, as opposed to having a lot of open space on the afterburner. So if anything, it was overcooling it.
I have since put a 50W heater cartridge on and had no issues with cooling fan on too.

lethal beacon
ivory kettle
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Have just done, thank you for that

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Will provide some details in here in case someone else has an issue:
Think I got to the bottom of the 'Heater extruded not heating at expected rate.
The Afterburner cooling, is a much wider area. It doesn't stack the airflow through the heatbreak but around the entire unit. Look at the two entries here. in this pic highlighted in red.
So first of all I swapped the Heater cartridge to one from my old Ender 3 that I had lying around with maybe <10 hours on it, as moved to an E3D Trianglelab V6 setup on that unit, and had the leftover heater cartridge. Still heated up at the same rate, so decided to go back and put the Afterburner hotend back on, to see if that made a difference.
Anyway, these are the test results.

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This is with 0% cooling fan on.
I ended up putting a different cartridge on, the Trianglelab 40W 6x20mm as I thought, surely the other heater cartridge couldn't be faulty, but I have it as a spare anyway so why not. It definitely improved, but still takes approx 3 mins to get to 240degrees on the Stealthburner, with HOTEND fan on at 100%.
Trying to PID tune at 0% cooling fan works now, however if i went to 25% cooling fan, it would fail. Decided to swapout the thermistor as well, from a Generic 3950 to a 104NT-4-R025F42G and update the printer.cfg file too.

Ran PID on both 0% and 25% fan and both work. So might just be a bit worn out both the heater and the thermistor. I'll get a graph up shortly

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I did also notice the Afterburner cooling ducts are more around the nozzle, whereas the Stealthburner do point more towards the heat block. Height is all ok, just the angle of where it goes.
Also, the Stealthburner does have 2 small holes in the ducts which puts airflow from the hot end fan through the ports to reduce them I'm assuming from deforming with extreme heat from the hotend.
Guessing the extra airflow was cooling the hotend block too much and the 'older' 40W couldn't keep up.