I’ve got this odd issue that has started up recently, I just cant figure it out, looking for some advice on a direction to look.
Everything is pretty much stock with areas related to printing PETG. Speeds are slow, it’s just this part of the print at around 2mm. Initially it prints fine, then I look and see it’s torn itself up after I suspect contraction after cooling?. I let the enclosure normalize slowly for about a hour…
I also thought under or over extrusion, but changing that setting does what it’s supposed to do, makes a mess with to much, or shows not enough while printing…
I’m at a loss for what is causing this, chamber temperatures, cooling, something I’m not yet familiar with tuning?. Reaching out for some ideas.
Cheers,
-Mike
Filament:JAYO Rapid Matte PETG Filament (First time using) First layer test: PASS sheet almost folds in half no breaks/rips between print lines. Filament: Dried/Drying in dryer at time of print. Flow Ratio: 0.95 Layer Height: 0.20 Print Speed: 12 mm3/s Nozzle Temp: 240c Z Offset: -0.05
Thanks @lion updated my post, this is the first time using this filament.
I had not thought about delamination, I’ll take a look! I’ve been fighting this for a few days now, just don’t understand why it looks like a pattern tearing itself like that, thanks for the pointer.
I have seen surfaces like that when the bridging layer on top of sparse infill is printed too fast. Then the full speed layers on top of the crappy bridging layer continue to fail.
I was thinking the same. Similar to the effect of printing PETG, when one’s forgot to switch from the PLA profile to PETG. Not that I’ve ever done that….
I didn’t think to check my infill, I have/had it set to 100%, just checked and it was back to 5%.
To cold, yeah, this filament gave me lots of trouble with tuning temps. It’s set at first layer 252, others 240 and the flow ratio is 0.95. If I kept it anywhere above 240 the filament was oozing out just a bit as the print head was moving between points. I can look in this area some more.
This helps, I was starting to look into and focus on settings I generally didn’t see others mentioning for these questions! Really appreciate the suggestions folks!
BTW I really like the filament, its nice when it prints, just has these torn looking lines.
Hi @redvinzent I have the following speed settings. I slowed the other layer speeds down, along with travel, and left acceleration high. Volumetric speed is 12% mm3/s (150mm/s). Filament is rated HS 30-600 mm/s.
@msand Thanks for the suggestion. I did mess around with some of the fan settings, good idea for me to re-review them and try turning them off, thanks!
You’re welcome, I just went through the same battle. It was aggravated by the cooler room temperatures of winter. I was wondering if something was wrong with my printers, a MK3 Prusa and a Soval 8. I keep having to relearn this lesson because sometimes you get away with certain settings for along time and then all of a sudden they are wrong for the conditions.
Hi @PicobelloBV I will post back with a update for sure, and yes I like the finish a lot.
Here is a project box I printed untouched other than I removed the supports under the mounting rail. The finish is really nice, the square vents turned out nicely, have a bit of edge issue with the corners. The tearing is a lot less prevalent as well. I really am starting to think cooling, except the pattern is to consistent spaced I have plenty of good suggestions to help figure it out.
This is the first good matte black filament I found that actually looks somewhat matte after printing.
Jayo is a sub brand of Sunlu if anyone was wondering.
Cheers,
-Mike
Not sure why my camera focus is so fisheye looking, but shows the quality well enough.
Need a 0.6 hardened nozzle and crank up the heat (265 °C on my SV07). Prints super easy with little to no warping. Layer lines are nearly invisible @ 0.15mm.
I bought the first roll out of desperation for a half finished project after a spool of Voxelab plugged the nozzle 4 times. Only CF-PETG I could get overnight was the Tinmorry.
I use it for ALL my functional parts. I use when I need a one and done for figurines and such too. Takes paint super well too.
Thanks @cardoc
I’ve been eyeing CF filaments, have some regular PETG that I really like from Tinmorry as well. I just don’t feel my setup is prepared for the CF part of 3D printing! I have good fume extraction, just not the work area to feel comfortable working with CF.
I’ve put that CF-PETG on my “wishlist” now, thanks for sharing the link.
@Lion Thank you, good to know, I had not thought about, the properties of CF blends and chemical odors.
My hesitation to use them is more about the micro bits of CF filament they are blended with, CF is some pretty durable material, PETG vs PLA probably have very different binding properties when heated and blended with CF and vise versa.
Before I start to work with advanced filaments, I want to understand more about them. For for all I know, the factory next door is pumping out 10 bazillion times the chemical particles it will take for 10 roles of CF filament roll to cause issues…
This discussion is probably a rabbit hole with very split opinions, all posts have a common theme ventilation, respirator, etc. I tried to search for “is carbon fiber filament safe” so many variations of answers, videos, clickbait etc. I plan to use it, just not yet.
I have plenty of good suggestions to help figure it out.
Not sure why my camera focus is so fisheye looking, but shows the quality well enough.
