Petg Blob, I really don't think it's an adhesion issue, it just kee

Petg Blob, I really don't think it's an adhesion issue, it just keeps dropping blobs at corners and picking up strings, then dragging it across the print. Sometimes blobs will stick to the nozzle and land in the part somewhere but is fairly rare in my experience. I had wonderful results with PETG, but after some printed parts suddenly appeared strings and bubbles on my parts, in addition there were black dots and I am PETG generates blob Hello everybody, another ugly problem has come up. It improves PET with the additional “G” representing glycol. The nozzle/heatbreak is sealed, since I already had a leakage and just installed brand new heat block and brozzle copper plated nozzle. PETG or more precisely Taulman t-glase is giving me a heache. RE: Burnt looking blobs when printing PETG My suggestion for next steps would be to remove the nozzle, inspect the top surface for any debris that might prevent a good seal, and then inspect the heat block, using a dental mirror if necessary. Any ideas? Damage is more often caused by frustration and impatience when trying to pull off the cold hardened PLA / PETG blob with force than by the print failure itself. Petg-hf dried for 12 hours. Print speed indicates how quickly the 3D printer’s print head travels while printing. Main Causes of PETG Blobbing PETG is an abbreviation of Polyethylene terephthalate. (240/90 degrees, no tweaking of any speeds, no cooling). This makes PETG an easy-to-print alternative for many desktop 3D printers, as it does not place particularly high additional demands on the hardware. It does great on first layer and big flat areas, but not great when traveling. I just sorta consider blobs to be a necessary byproduct of printing with PETG. Can someone help me figure out what’s going on around the circles and how to fix it My PETG prints keep clumping up and stringing. Settings are as per Slicer defaults for t-glase. As stated, I'm getting oozing, blobs and strings with any prints I've tried. PETG nearly always requires a different first layer calibration Z height for a good adhesion on the first layer. It can also be buildup from printing too close to the bed (first layer) petg likes some more distance. Hi, Overall the printer works fine, but occasionally it will deposit blobs. This also happens when printing on my anet A8, which can print PLA perfectly too but has the same issues with PETG PETG might sound like the best of both worlds, but it has such high surface adhesion that it builds up around the nozzle and deposits artifacts into your print model. Persisting oozing blobs and stringing with Prusament PETG - What am I doing wrong? As shown on the picture I got these weird blobs on a Prusa Mini+ that ruin every print with corners and round objects which require the print head to stop and move somewhere else. PETG likes to stick to the nozzle. Does anyone have any recommendations or tips on how to prevent blobs on initial layers from being formed? RE: XL first layer problems with PETG, nozzle "leaks" while in "absorbing heat" mode, filament blob screws up flatness calibration? I print mainly with PETG on the XL. Explore Bambu Lab's comprehensive guide to PETG HF 3D printing filament. But while printing with Bambulabs PETG, I end up with blobs on the print, stringing, and bobs on the nozzle. My thought is to use Support for PLA/PETG as an interface layer on top of supports to get a clean print. I have used other brands of PETG and get similar problems. Hi, when printing PETG sometimes with large first layers, I get a single blob with some dirt. Printing Tucab Blue PETG at 230°C on a custom coreXY printer. How to help mitigate petg string/blobs So I know PETG is stringy in general but how can I help this. Jul 11, 2024 · My main problems were stringing on the first layer and the damned PETG blobs that impacted print quality and ultimate the end result. Retraction Speed. RE: PETG Nozzle Blobs @peter-m26 Sorry if this is a dumb question, but do you want me to take a picture of something I've already printed or printing something new stopping it after the first layer? I will get you the picture as soon as I'm sure which way you want it. I still use PETG for applications in which I require slight flexibility, but it’s really annoying to work with and you really need a silicone sock. As an affordable 3D printing filament with excellent mechanical properties, PETG is a must-have material for FDM users. I have been trying different settings with a very simple test model - and as you can see on the vertical face, there are lumps and bumps along the way I’m trying to print a model in PETG that has a section with large overhangs. Is to just baby step to start it a bit higher up than when printing PLA. Excessive material on the nozzle can lead to blobs on the 3D print and affect its surface quality and appearance. Struggling with PETG or PLA? Discover the most common 3D printing issues like stringing, warping, and adhesion, and how to fix them fast. Avoid ironing which inherently will create small blobs. I have a P1P and have had nothing but problems trying to print polymaker PETG. From really bad stringing and blobs, horrible bed adhesion, and the layers just never seemed to bind to each other properly. So, how can you prevent PETG blobs and PETG stringing? PETG is easy, you just need to do one thing, add G29. I live by Seattle, PETG often fails from three causes: too much cooling, moisture in the spool, and under-extrusion. Try the same print with something like a gyroid infill and see if that reduces the issue. Maybe I'm not pushing the limits of my Prusa enough! While PETG sticking to the nozzle is an issue that many 3D printing enthusiasts encounter, it’s definitely not the end of the world, considering that finding the root cause and applying the solution is straightforward in most cases. Your retraction settings are another important factor in reducing PETG stringing in your 3D prints. I've tried a few profiles from the internet with no luck. So, the biggest fix for PETG printing I’ve run across, to stop both stringing and this exact problem. The retraction distance is how far (in millimeters) the extruder retracts the filament into the nozzle. You can also increase your retraction. PETG doesn't like to be printed at 150 mm/s usually advised speeds are in the region of 50 mm/s. I found that one brand of PETG I use just doesn’t like going above 220 without a lot of that branching. Absolutely no issues with PLA… I’ve been using the Bambu PS1 and the K1 Max with abs… Let's dive in to see more on PETG stringing, 3D printing filaments on PETG, how to fix and avoid errors during these prints. PETG Filament moisture side by side. Nov 14, 2025 · Join us as we explore comprehensive strategies and solutions that will transform your approach to PETG printing, ensuring that obstacles like stringing and layer blobs become mere footnotes in your 3D printing narrative. Learn about PETG HF's properties, applications, and expert tips to achieve the best printing results for your projects. Subsequent layers seem to try to smooth things out, but the damage is already done (see the green Moisture in the PETG filament, which is a pretty common occurrence, especially if you had your spool of PETG for a while now, is the main culprit behind PETG bubbling during 3D printing. 1st layer also appears to be rippling. After a few days of trying to get PETG to print like it should, these are my findings for a better overall printing experience. Basically a blob builds up on the nozzle until it gets to about pea sized, then it sticks to the part. Any idea why this would happen? Leaking PETG Hello, did anyone ever use the Kingroon PETG filament before? If yes, what can I do to keep it from leaking water please? I printed the same file with the same settings with the Tinmorry PETG is a Glycol Modified version of Polyethylene Terephthalate (PET), which is commonly used to manufacture water bottles. I raised the temperature in steps from 235 to 250 and the part cooling fan from 30 to 50% now. I think BambuStudio's default "generic PETG" profile uses 10mm^3/s volumetric flow which seemed to be contributing to nozzle blobbing and overextrusion on parts, so I set it to 8mm^3/s, increased retraction distance to 1. 8mm nozzle at 250C and getting this type of stringing and blobs on tall skinny stuff. It looks like the clumping comes from the infill. Also, ensure your nozzle is clean because any residue or build-up can lead to blobs and zits. PETG, even though I seem to have read every article and tried many settings, I still get blobs, but only on vertical surfaces. I tried replacing I’ve had my K2 now for 3 weeks and had nothing but issues for the first 2 trying to print PetG which is the main filament I work with. Hey all- Through research and all, I've been informed that PETG filament is indeed prone to blobbing when printing due to how "boogery" the filament can be in a molten state. PETG loves to ooze and build up on the nozzle. I use the Textured PEI and I do clean it just about every use. Could be that because of the speed you build up blobs from left over pressure of the extrusion process which clutter and burn. Starting with the Engineering - Normal settings on a 0. PETG beginner here. We provide solutions for some typical issues, such as stringing, bad layer adhesion, nozzle clogging, and rough surfaces. Slower printing speeds usually result in better print quality. So leveling may help. PLA works flawless, but PETG is a troublemaker. If the first layer is wonky, the head will build up blobs, and then these show up in later layers as the fall off the head - usually with poor results. It would help prevent blobs and stringings to ensure 3D print products have an excellent finish surface. This is petg at 237 degrees. Being a Newbie, to 3D printing, I started with PLA and PLA+…and feel pretty comfortable with printing with those. (see image). Printing Speed. It is a semi-rigid material with good impact resistance, but it has a slightly softer surface which makes it prone to wear. Extruding too much material causes PETG to build up on the nozzle and every now and then leaves a blob or a string of filament on the surface. Changing retraction/drying filament didn’t change anything until temperature was reduced from standard profile. Follow these blobs around with a razor blade on a handle. It might be this: Removing Zits and Blobs on your 3D prints – Adjust your Slicing Resolution! Hi, I've spend the last couple of weeks churning out calibration prints to no avail and thought I'd come here for ideas before I give up on PETG on the S5 entirely. 03 to your filament startup code. ) The print came out decently good. The article, well researched, serves as a guide to avoiding PETG blobs in 3D printing. Want to print on the carbon plate. Jan 19, 2023 · One of such problems is the appearance of blobs and stringing on your print, which is especially common with PETG filaments. You can't let the nozzle touch any previously laid material, petg will just blob up and snowball then ruin the print or tear the top surfaces. Calibrate your extruder for PETG if your going to print with it often, if your not. PETG filament is not as easy to print as PLA. Getting Rid of Blobs With PETG? 5 posts Page 1 of 1 gwhite Posts: 254 Joined: Wed Jul 19, 2017 1:37 pm PETG has a tendency to ooze out of the nozzle while printing. Nozzle Temperature. I’m trying to print petg, and I’m finding that the batch (3 different colors) that I have seem to be making crumbs of filament (see first pic to see what I mean), and forming a buildup of filament around the sides of the nozzle (second pic is the blob I pulled off the nozzle halfway through when I paused printing. A lot of folks have issues with the default Bambu Lab X1 Carbon PETG settings right out of the box. I find PETG is very sticky/stringy and as a result passing the nozzle across print infill can 'harvest' the existing printed material. All other sides are flawless. But it is notorious for oozing and stringing during printing. But could it be, that I have to permanently adjust the z-offset in PrusaSlicer for PETG to reduce or even eliminate Filament being stuck to the nozzle? My prints with old roll of Overture transparent PETG came out without any blobs. Any tips on how to get rid of these blobs while printing as clear? The only other filament I had similar problems with was Bambulabs white PETG. Any tip This only occurs with PETG, it's not bad with PETG-CF or any other filament. Petg is known for oozing more than pla, try upping retraction distance and see if that helps. May 23, 2018 · PETG is stickier than PLA and really, really doesn't like to be over-extruded. I am trying to print using Overture black PETG but blobs are ruining my prints! Here's my info:Prusa MK3S Kit - stock setupOverture reel says: Nozzle There was some PETG in the Fan an a big blob of PETG around the hotend. Retraction speed refers to how quickly the extruder retracts the filament when traveling from one area to another. One reason why PETG filament has become a popular material for many 3D printing users is that the PETG 3D printing temperature is usually not much higher than PLA. As these blobs and strings can easily ruin the look of your 3D prints, it’s a problem that you can’t ignore. . Getting blobs on the sides of these prints, seems to be taking material from the areas next to it and forming a blob, does anyone know how to fix this? P1S, PolyLite PETG, 245 Nozzle 80 Bed, default retraction settings, printing slowly at 50 mm/s, no fan except on overhangs, printing outer inner infill P1s. To quickly recap, here are the things that can cause PETG to stick to the nozzle: The print temperature is too low. Don’t burn yourself. It just moves way too fast, drags on the infill and destroys everything in it’s wake (or in the case of rectilinear it doesn’t laminate properly and get’s caught). RE: Large blob (?) on particular PETG print You gotta watch for blobs as you print PETG - especially flat surfaces. Getting the right nozzle temperature for your PETG filament is the first step to preventing PETG stringing. I print PETG fairly regularly and the only thing I do is change the nozzle temp settings in the generic petg profile from 255 to 270. However, try as I might, the PETG seems to blob up and not really adhere to the support interface layer. The print is otherwise fine, but there are so many imperfections because of this. Well, this was an interesting unintentional experiment. In general, you’ll pick up blobs from first layer bits that pull off of the bed. I can print PLA perfectly with no blobs but PETG seems to be a little problematic. 5mm, increased retraction speed to 40mm/s, and lowered print temperature to 240C. Another retraction setting that will take some testing to perfect is the retraction distance. I have found choosing an infill pattern that doesn't cause the print head to cross existing infill has helped quite a lot. 240 nozzle and 85 bed temp, in an enclosure. Over-extrusion is death because any extra material will glob up into a wad on your hotend until it's deposited in some unfortunate location. The part is going to be a diffusor for a LED strip, so 100% infill. Retraction Distance. To help with that, you can set combing to within model only. I’ve been printing PETG with a 0. Any thoughts on what I need to do? My first few PETG prints came out fine. I’m getting blobs on the print and nozzle with prusament PETG using the Prusament PETG profile. mess with the flow until your prints look good but not over extruding. Struggling with PETG stringing or poor adhesion? Discover the best PETG settings for nozzle temp, bed temp, speed, and retraction to achieve strong, reliable, and smooth 3D prints every time. Step 1) Heat up the extruder Bring the hot end up to temperature, this will melt the plastic solidified against the hot end and make it much easier to remove. Oct 26, 2023 · Just like stringing, you can prevent PETG zits and blobs by adjusting your nozzle temperature, travel speed, and retraction settings. About a month ago, I started buying active dryers and printing directly from them. These changes specifically target those points, so beginners should see: Printed Bambu PETG-CF for the first time and got some bumps on the top. That is typically what causes alot of blobs. This process can take time to figure out. You’ll also pick up bits when bridging and traveling through air. Especially when printing with PETG, but also sometimes with PLA. 1 Z0. When I first got my Bambu Lab X1C, I could not print PETG. PETG is sticky goopy stuff. Perfect live Z can help. I was using a temp of 230, textured PEI My PETG/CPE/PCTG filaments absolutely hate both Grid and Rectilinear infills on the X1C. cs2t9, jixv, u0ox, imf7r, dtiq, 3sl9m, gimuw, utxlno, r362f, w9qd2,