3D Printing Stack Exchange
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Questions tagged [petg]

Use this tag for questions about PETG.

PET-G (or PETG) is obtained by doping PET (PolyEthylene Terephthalate) with glycol (hence the -G). PETG is a thermoplastic material with similar properties as ABS, difference is that it is more flexible and shrinks less than ABS. This means it is easier to print than ABS and preferred over ABS, especially in cases where a 3D printer does not have an enclosed build platform.

More details here.

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Why keep the bed heated after initial layer(s) with PLA (or PETG)?

I'm printing on an Ender 5 with the default flex/magnetic build surface. I read that PLA and PETG may sometimes be printed without any bed heating at all and also that bed heating is the main contributor to the power consumption of a printer. As I…
Oliver Giesen
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PETG Collecting on the Extruder

I have recently bought a spool of eSun PETG. So far I really like the filament. My only complaint is, I get lumps of charred filament deposited on my object. The slicer I used is Craft Ware and I have played with the Far Travel -> Elevation…
Travis Pettry
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PETG layer adhesion

I've been playing around with PETG for the first time, and everything seemingly worked right just from the start - clean prints, no stringing, no bed adhesion problems, no warping or dimensional accuracy problems, etc. As expected it prints a lot…
R.. GitHub STOP HELPING ICE
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Question about retraction distance and stringing/print quality with PETG

I've tried printing the Basic Stringing Test on my CR-10S using PETG (250 °C nozzle, 80 °C bed) with different retraction distances leaving all the rest unchanged. In the image below you can see 0 mm, 5 mm and 10 mm retractions (in order…
Fredo Corleone
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Messy top layer with PETG filament?

I'm having issues getting PETG to print nicely. I have encountered pretty much every issue because when I fix one thing another issue pops up. I see people saying that you should "just copy your PLA settings", but that definitely did not work for…
Jacob Birkett
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Thermal Runaway E1 at Layer 2

Before I start, I'll give you my setup: Ender 3 Pro Marlin 2.0.7.2 Material/Nozzle: PETG 0.4 mm @ 215 °C Bed: Glass @ 80 °C Default printing speed: 70 mm/s Standard part cooling fan Since I've updated the Marlin FW on from factory default to…
jwagn
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Why does PETG require slower speed?

PLA has a heat capacity of 1.8-2.1 J/g-K, while PETG 1.1-1.3 J/g-K. This means that each gram of PLA needs more energy to heat up. I assume no "melting latent energy", since we talk about plastics. The density is about the same. Still, printing…
FarO
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Bumpy first layer with PETG

When I print with PLA, I get a perfect first layer. However, when I print with PETG, the first layer looks like this: I've read all the info that suggests reducing the temp, speed, and increasing retraction... I've done all that which has improved…
BG100
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How to work with PETG? Settings, caveats, etc

We've been doing some printing with PETG filament on Ender 3 Pro printer and the result were awful: Here are settings we used: Extruder: 240 °C Bed: ~70 °C (± 10 °C) Speed: 80 mm/sec There are a few types of problems that we had: Initially…
wha7ever
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PETG filament doesn't stick reliably to fake Buildtak surface

I just got my first spool of PETG and tried to calibrate an Ultimaker Cura profile for it on my Ender 3 today with limited success. I've had severe issues with the filament not sticking to the build surface, instead balling up around the edges of…
ifconfig
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Does PETG fade in the sun?

I'm looking at scanning in a statue on my pond and making a print of it. I'm wondering if PETG will fade and how fast. I'm thinking of using white or maybe a bone color if possible. If PETG fades kinda fast, what material should I use? Keep in mind…
Craig Bennett
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What glues to use for PETG?

In analogy to: What glues for bonding printed PLA to injection-molded plastic?, what are the best glues to use for PETG? I mostly print in PETG and have occasional failed prints which I usually reprint. But what if I'd like to repair a print e.g. a…
0scar
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Under extrusion... sometimes

You can see small gaps in the print which looks like under extrusion (see image below). What is the reason for that? I've tried smaller retracting distances. Temperature looks stable. Print settings: PETG from Extruder 245 °C Printing…
rusky
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Can I dry PETG filament under sun?

At the moment the outside surface temperature is around 30 °C. Can I put my PETG spools outside with a fan in order to dry them cheaply?
Fredo Corleone
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Is PETG filament food safe?

I've been trying to find a 3D printer filament which would not release any chemicals if in contact with heated water for a substantial amount of time. So far, I've easily ruled out both PLA and ABS, as they're not considered food safe from what I…
Melvin
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