#Printing PETG in Ender 3 V3 SE

1 messages · Page 1 of 1 (latest)

woeful topaz
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Hi guys, I'm new here.
I have a Creality Ender 3 V3 SE. I tried printing with PETG and it ran allright at the beginning. After some 30 minutes I stopped checking up on it and some hours later when I looked at it again it had this HUGE blob stuck to the head.
After that I haven't tried PETG again, but I'd like another go. Anyone have a PETG profile for a Creality Ender 3 V3 SE they can just send me? I have never modified the filament profile (besides some minor alterations for my specifc PLA), so I'm not sure what I should change.

If not, any tips would be appreciated. The print stuck to the bed initially, I'd modified the temperature of the head correctly, maybe I didn't change the flow rate or some other exoteric config?

zenith cobalt
zenith cobalt
woeful topaz
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Orca

zenith cobalt
woeful topaz
zenith cobalt
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Heatbreak you need to not release toxic fumes at the temps you need for PETG

teal iceBOT
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PTFE Temperatures
TL;DR: Do not heat PTFE above 230C for long periods of time, and never above 260C.

Polytetrafluoroethylene, a.k.a. PTFE, a.k.a. Teflon, is a polymer renowned for its extremely low coefficient of friction. It is used in many industrial and domestic applications, most famously in non-stick pans. Relevant to us, PTFE is used as Bowden tubing and heatbreak liners in 3D printers for ease of filament transport. This places the polymer in close contact with areas where high temperatures are routinely encountered.

PTFE will begin to pyrolyze at 220 degrees centigrade. It will begin off-gassing at significant amounts at 240. At 260, this process will have accelerated to the point where the structural integrity of your tubing will have been compromised. Most contemporary citations focus not on the physical decomposition of PTFE but on the health effects of byproducts used in its manufacture. However one major health risk is directly attributable to PTFE pyrolysis: Polymer fume fever.

Polymer fume fever, or colloquially "Teflon flu", is a condition caused by overexposure to fumes (over the course of 4-8 hours) caused by the decomposition of PTFE. The advanced respiratory metabolism of birds make them particularly sensitive to polymer fumes, which leaves them at high risk of death in environments where such fumes are prevalent. Further reading is linked below.

Further reading

?ptfetemps requested by: m.von.d
woeful topaz
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I found this one, bu it looks like it has some power cable on it. Does it only need the regular power of the printer or do I need some other piece? It is specifc for the 3 V3 SE, so it probably doesn't

D_NQ_NP_965504-CBT97937138638_112025-O.png
woeful topaz
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Maybe around 4 hours every 2 weeks?

zenith cobalt
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Your decision honestly

teal iceBOT
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?hotend requested by: m.von.d
zenith cobalt
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You only need the heatbreak

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Oi loadvaulthah

woeful topaz
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Thank you

teal iceBOT
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?hotend requested by: m.von.d
zenith cobalt
woeful topaz
zenith cobalt
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You do you👍

woeful topaz
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I'll look into another one. Thank you

zenith cobalt
woeful topaz
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"Termistor: 260 C."
Yes, it sounds like it (It's in Br-Portuguese, so whatever "Termistor" is it is probably another word in english)

zenith cobalt
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Those for example

woeful topaz
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Oh, wait, this one is for the Ender 3 S1, mine is s3. Ill look for another one

zenith cobalt
woeful topaz
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The silicon thingy on the near the tip has never been the same after that. One side of it doesn't stick to the metal, staying elevated, for example

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Whow, that was hard to translate to english, I don't even know if that made sense