Questions tagged [petg]

Use this tag for questions about PETG.

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PETG layers are super rough

I own a spool of PETG and I have been having major print quality issues: layer offsets, chunks of 3d print strewn across the buildplate and other things. I traced these effects to a single culprit: ...
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  • 285
1 vote
1 answer
62 views

What cause the pattern in a large area?

Every time I print a large area I get the pattern in the middle. Below picture was taken during printing. The material isn't evenly laid flat on the bed and some are being scraped up. It appears from ...
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  • 243
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1 answer
92 views

Is PETG sensetive to moisture?

Various filaments are sensitive to moisture to one degree or another. So far I've only printed with PLA. I can definitely tell the difference between fresh (just out of the package) PLA but I don't do ...
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  • 1,279
3 votes
1 answer
455 views

What is the difference between PET/PETE and PETG?

I've heard that PETG, what we print with, is slightly different than PET or PETE, which is commercially available. Yet, PET bottles seem easy enough to recycle into prints according to these videos: #...
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1 vote
1 answer
309 views

What OEM is Inland PETG+?

I have a local Microcenter and got some cool orange PETG+. I've never printed with PETG before, but this PETG+ stuff seems flexible and weak. I printed a random part with some thin walls, and when I ...
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1 vote
1 answer
1k views

K-Thermistor vs Ender 3 Stock Thermistor: Problem with bad reads

I have changed my hotend on my Ender 3 v2 with Dragonfly BMS. In effect, because I wanted to reach higher temperatures, I also changed the thermistor with one that is 3mm wide and does not have the ...
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  • 171
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1 answer
820 views

Can the Ender 3 Pro be upgraded to use PETG

Is it possible to buy/upgrade the nozzle on my Ender 3 Pro to one that is suited for handling the higher temperatures needed to effectively print with PETG filament?
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4 votes
1 answer
280 views

Flat print blobbing and scuffing with PETG on Ender 3 Pro with Microswiss AMH/DD

I'm getting a lot of blobbing and scuffing on top of my prints in PETG on my Ender 3 with AMH/DD. It doesn't seem to do this if the print doesn't have a flat bottom so much. I have the E-steps set to ...
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  • 143
3 votes
3 answers
855 views

PETG layer adhesion problems

I have recently started printing with Polymaker's PolyMax PETG on my Ender 3 v2. I have not been able to get the layer adhesion anywhere near as strong as it should be. I would guess it is around 20-...
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2 votes
1 answer
155 views

How do I fix mini-blobs on the edge of a part?

I am using an Ender 3 with a Micro Swiss hotend and a 0.8 mm nozzle, Polylite PETG filament and a masking tape covered glass bed. I have used Cura for slicing with settings: Layer height: 0.32 mm ...
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2 votes
3 answers
85 views

Insulating bed material?

I've observed printing PETG that the primary if not the only reason for using a high bed temperature seems to be preventing the bed from acting as a huge heat sink and rapidly cooling the initial ...
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0 votes
2 answers
317 views

Difference in weight from Cura to printed model

I've recently switched to PETG , and I'm using Cura as slicer and Ender 3 as printer. I'm printing a model which Cura declares to be 35 g, but if I weigh the printed model it weighs 23 g. I'm printing ...
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  • 109
0 votes
1 answer
66 views

PETG and Clear Aligner?

There is a material called PETG. In addition, there is a medical solution called Clear Aligner to fix perplexed teeth. Can I use a 3D printer using PETG and make transparent apparatus? The program I ...
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2 votes
1 answer
264 views

Z banding issue

I'm currently facing a Z banding issue that frustrates me more and more. My printer is a modified Anycubic I3 Mega. Customizations: Mainboard: Bigtreetech SKR 1.4 Turbo Stepper Drivers: TMC 2208 v3 ...
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  • 31
0 votes
2 answers
69 views

Apply / find / create a stainless steel coating to apply to a PETG or PLA part to make it react to a magnet

Apply / find / create a stainless steel coating to apply to a PETG or PLA part to make it react to a magnet. My goal is to make a small tubular and conical shapes that can be painted with a stainless ...
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  • 147
2 votes
1 answer
482 views

How to switch from PETG to either PLA/ABS mid print?

I have an Ender 3 Pro and I'm about to print a relatively large model on it. I've been printing in PETG and I'd like to use up the last of the roll during this print. When the roll runs out however, I ...
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0 votes
0 answers
28 views

How to stop stalagmite formation with translucent PETGs

I have had this issue with both Sunlu PETG (red) and TechnologyOutlet PETG (blue), both are translucent PETG filaments. This is printed with a bowden setup, 5 mm retraction, 85 °C bed and 245 °C ...
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1 vote
1 answer
133 views

Will glue sticks form a barrier on a build surface to prevent PETG from damaging the surface?

Will glue sticks, such as Elmer's All Purpose, Cra-Z-Art washable or Scotch Permanent, form a barrier on a build surface to prevent PETG from damaging the surface? While forming a barrier that holds ...
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  • 2,040
2 votes
1 answer
1k views

What is the best build surface for PETG?

This question doesn't necessarily have one answer. I'm looking for a build surface that doesn't tear up when removing the PETG print, but still holds the PETG down and keeps it from warping. I am ...
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  • 2,040
6 votes
2 answers
2k views

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 ...
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  • 111
0 votes
1 answer
2k views

What material should I upgrade the teflon tube to?

I'd like to print PET on an Ender 3 v2, but I see that some people recommend upgrading the hotend because it will melt the teflon filament feeder tube. I'm not sure if the hotend will even get hot ...
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0 votes
3 answers
6k views

What is the best technique to improve removing PETG from the print bed?

What is the best technique to improve removing PETG from the print bed? PETG is known for sticking well to the bed; so well that it does not need a heated bed. If it weren’t for printing other ...
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  • 2,040
1 vote
2 answers
949 views

MINTEMP BED Fixed error when running consecutive print

I am using "Pretty PETG" along with PrusaSlicer's consecutive print mode. What I am noticing is that upon finishing the first print, the printer hits ...
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  • 123
1 vote
1 answer
255 views

Problem printing bigger models in the Ender 5

In all the bigger prints I print on my Ender 5 with PETG I have problems with warping and raft detachment during printing. I have a glass bed and I'm using Ultimaker Cura 4.6.1 standard printing ...
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4 votes
2 answers
818 views

PETG grinding with direct drive extruder

I've been wrestling with a filament grinding problem for a few weeks now and I'm stuck. The problem manifests itself as starting a print alright then extrusion stops while the printer keeps moving. ...
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2 votes
3 answers
8k views

PETG warping - adhesion or temperature too high?

Ender3 v2, SIENOC PETG which advises temperature of 230-250 °C on the box. I'm printing on top of cleaned blue tape, using a temperature of 230 °C for the nozzle and 80 °C for the bed. I've had all ...
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  • 21
3 votes
2 answers
4k views

Visible lines along Y-axis on Ender 3 Pro

I have a model that's placed on the bed exactly like on this picture: I have constant quality degradation as the bed moves down to print in the upper left corner (1). Everything is fine on the X (2)-(...
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3 votes
2 answers
1k views

Can PETG be used as support material for PLA?

Printing supports, either complete, or partially from PVA have not always resulted in successful prints according to my experience with the filament (used in a dual extruder Ultimaker 3 extended). But,...
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  • 30.6k
1 vote
1 answer
420 views

Upgrade hot-end to achieve higher temps (e.g. for PETG)

I'm struggling to get my printer to the temps required for modified PETG (the filament I have is Fillamentum CPE and recommends 255-275 °C), I currently can only reach 245/250 °C even if my target ...
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3 votes
2 answers
3k views

How to solve burnt blobs on Prusa MK3S (PETG)?

As stated above, I am trying to solve a problem I've had for a long time. Unfortunately, this has recently intensified to the point where it causes layer splitting/detaching from each other. I have ...
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  • 181
1 vote
1 answer
80 views

PET-G grid print problem

My supports 'grid' prints with empty spaces (after stoping extraction over perpendicular lines) (BTW. I have checked the direction when it appears and it has nothing to do with coastig) (the end ...
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  • 11
5 votes
2 answers
2k views

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 ...
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  • 3,786
1 vote
2 answers
858 views

How can I add an offset to the first layer to increase clearance?

My printer is calibrated for a certain clearance from the heated bed, which is chosen based on PLA. I would like to try to increase it for the first layer for PETG, so that adhesion is reduced. The ...
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  • 3,786
3 votes
3 answers
676 views

Why could my opaque PETG be printing "transparent" in certain places?

I'm printing with opaque grey PETG on glass. The intention is to produce a house number plate, so a shiny, production quality finish on the bottom. For this reason, extruding at 245 °C with a bed ...
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  • 162
5 votes
3 answers
3k views

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 ...
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  • 30.6k
1 vote
1 answer
187 views

Printing Filatech PETG with HyperCube E3Dv6 Clone fails after 3 smooth layers

Recently I got a PETG filament from Filatech to print with my HyperCube printer with E3Dv6 clone Hotend. First 3 layers for every print are pretty fine but 4th layer doesn't stick and my prints fail ...
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  • 181
2 votes
4 answers
4k views

New PETG spool from eSUN is making popping sound while extruding

I just bought new eSUN PETg filament. When I started to extrude it, I heard popping sound same as moisture boiling out of it. I don't expect new eSUN vaccum sealed filament having moisture content. Is ...
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  • 21
4 votes
1 answer
2k views

Thermal runaway with specific prints

I have been experimenting with PETG on my CR-10 upgraded with an E3D all-metal hot end and Marlin firmware on the controller. I am printing with 0.8 mm nozzle at 250 °C and an 85 &...
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  • 43
5 votes
2 answers
5k views

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 ...
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  • 237
3 votes
0 answers
1k views

Horizontal defects when linear_advance enabled?

What could cause that? When linear_advance (v1.5) is "off" (M900 K0) - everything is uniform and smooth, only corners are protruding as expected. When it is "on"...
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5 votes
2 answers
2k views

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:...
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  • 53
3 votes
2 answers
473 views

Does acid dissolve PETG 3D prints?

I want to print a lemon squeezer and I would prefer to use PET-G. I don't know if it is safe to use, because lemons contain lots of citric acid. Does it dissolve PETG? I haven't found an answer ...
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  • 515
17 votes
5 answers
22k views

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 ...
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3 votes
1 answer
1k views

Retraction Jamming Problem!

Recently I had this problem where I needed to change filament from PLA to PET-G or similar. And... filament jam. After playing around with different settings and speeds and still getting the same ...
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3 votes
1 answer
421 views

PET-G under-extrusion after changing the nozzle to a 1.2 mm d. one (Prusa i3 mk3s and PrusaSlicer v2.0)

PET-G is the main filament I use. I can achieve high quality of my prints with my Prusa i3 mk3s printer. Recently however, I've recently changed my nozzle from the default 0.4mm to the 1.2mm. I ...
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  • 515
2 votes
1 answer
547 views

Printing with PETG, printer says it's out of filament when it clearly is not

Background: I have an Alfawise U20 (CR10 clone) and am still somewhat of a noob, though I've been learning as much as quickly as time will allow. The Alfawise U20 has "out-of-filament" detection, ...
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  • 141
4 votes
1 answer
1k views

PETG on Ender 3

I've been trying to print some eSun PETG on my Ender 3 with some questionable results. I am experiencing severe stringing. Attached is a photo of my first layer. My settings are: 250 °C ...
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  • 41
4 votes
2 answers
2k views

Prusa i3 MK3S 3D printer PETG printing problems

I am using a new Prusa i3 MK3S 3D printer kit. I print lots of things using PLA and PETG. After a week of great performance I noticed that when printing some objects with PETG filament I often ...
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  • 515
6 votes
7 answers
15k views

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)...
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  • 241
9 votes
3 answers
23k views

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 ...
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