The new perpetual 3D Printing Thread
- Thread starter KT421
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Ugh. So it's been printing perfectly fine the last few days, various parts. Now all of a sudden it looks like 1st layer adhesion issues. WTF.
HatchBox ABS, using my printers PrusaSlicer ABS profile with the temp set to 230C (220-240C is on the spool), bed 110C. Last few days I've printed several parts just fine. Today, all of a sudden, it's printing bad. Appears to be some kind of 1st layer adhesion issue? I'm using a brim, I set the 1st layer down to 25mm/s, doesn't seem to be doing any good. I'm at a loss what's changed between the last few days and today. Could the filament just have suddenly reached a tipping point with moisture absorption?
HatchBox ABS, using my printers PrusaSlicer ABS profile with the temp set to 230C (220-240C is on the spool), bed 110C. Last few days I've printed several parts just fine. Today, all of a sudden, it's printing bad. Appears to be some kind of 1st layer adhesion issue? I'm using a brim, I set the 1st layer down to 25mm/s, doesn't seem to be doing any good. I'm at a loss what's changed between the last few days and today. Could the filament just have suddenly reached a tipping point with moisture absorption?
Yes, but also Hatchbox ABS is pretty hit or miss, in my experience with it, Diameter control was a bit how-ya-doing, and particulate sometimes ended up in the filament. Red and white especially.
It was working perfect all through the rest of this week. Just all of a sudden...
Yep, that tracks with my experience. Might just be a bad spot in the spool. Sometimes I could move 5M down the spool and have it go back to usable.
Hm. Well, turns out I had another Hatchbox ABS in white, so changed spools. I'll try cutting out a section of the other spool and try it again later.
Also loaded the TPU into the other nozzle, for when I start to print that. Wow, the feel of that stuff is crazy weird! It's 95A, so we'll see if it's tough enough to be a cane foot. I think so, or I'll try combing some ABS/ASA and the TPU on the outside. I suspect I won't, most of the stiffness can be handled by the tube/attachment, while the TPU just needs to be sturdy/wear resistant enough to handle a variety of surfaces. Once I get what I want, I'll just print out a few extra copies to take with me to the festivals just in case.
Maybe if this goes well, my v3 will end up be 3D printed polycarbonate. Need to read up on light channeling/scattering designs though, to give more even glow. That's for the future though. And bonding the pieces together to form the cane tube might be a challenge, to try and get a smooth enough surface with harder to detect/see joints.
EDIT: Still early, but that other roll seems to have done the trick. I think you're right, just a bad section of the ABS.
I think overall, I'm going to be switching to Sunlu/SainSmart/Polymaker for most/all of my filament needs. Although Hatchbox PLA has been really great, but I'm going to be trying out PETG to use instead of PLA for the future, once I get through my existing PLA.
Also loaded the TPU into the other nozzle, for when I start to print that. Wow, the feel of that stuff is crazy weird! It's 95A, so we'll see if it's tough enough to be a cane foot. I think so, or I'll try combing some ABS/ASA and the TPU on the outside. I suspect I won't, most of the stiffness can be handled by the tube/attachment, while the TPU just needs to be sturdy/wear resistant enough to handle a variety of surfaces. Once I get what I want, I'll just print out a few extra copies to take with me to the festivals just in case.
Maybe if this goes well, my v3 will end up be 3D printed polycarbonate. Need to read up on light channeling/scattering designs though, to give more even glow. That's for the future though. And bonding the pieces together to form the cane tube might be a challenge, to try and get a smooth enough surface with harder to detect/see joints.
EDIT: Still early, but that other roll seems to have done the trick. I think you're right, just a bad section of the ABS.
I think overall, I'm going to be switching to Sunlu/SainSmart/Polymaker for most/all of my filament needs. Although Hatchbox PLA has been really great, but I'm going to be trying out PETG to use instead of PLA for the future, once I get through my existing PLA.
Well that was annoying. My first TPU print, was going just fine, and then apparently it got mis-aligned/tangled up/something into the gears of the extruder. How weird. A direct drive. Maybe I was trying to print too fast for TPU, given how squishy it is, a bit too fast might have caught the wrong way on one of the other gears or something.
Haven't actually needed a release agent. Although I'm not printing something with a big surface area on the plate, just multiple smaller ones.
But yes, SLOW. Slow made it good.
But yes, SLOW. Slow made it good.
Depending on the build plate, TPU/TPE can take chunks off it, AFAIK, specifically PEI. One of the tips to avoid this was using baby powder as a release agent on top of PEI, or glue stick (just something to protect it).
TBH, I usually just flip my spring steel PEI bed, slather some bed goo/glue stick on bare metal and print on that.....
TBH, I usually just flip my spring steel PEI bed, slather some bed goo/glue stick on bare metal and print on that.....
It can?! Oy. Mine is double sided flexible magnetic, does say PEI. Umph.
This person says a warm bed is fine
View: https://www.reddit.com/r/3Dprinting/comments/7kf36f/comment/dregjyi/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button
It's also a textured bed, not smooth. And also a warm bed right after printing finished, and it had bits touching the plate, not large solid areas touching the plate.
Well...I guess I'll see when I get home. I started a TPU print this morning before I left, since it's so slow, so I'll see how it is when I get home. https://www.3dprintbeast.com/tpu-on-pei/ recommends some kaptan tape as an option, and fortunately I do have that laying around.
This person says a warm bed is fine
View: https://www.reddit.com/r/3Dprinting/comments/7kf36f/comment/dregjyi/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button
It's also a textured bed, not smooth. And also a warm bed right after printing finished, and it had bits touching the plate, not large solid areas touching the plate.
Well...I guess I'll see when I get home. I started a TPU print this morning before I left, since it's so slow, so I'll see how it is when I get home. https://www.3dprintbeast.com/tpu-on-pei/ recommends some kaptan tape as an option, and fortunately I do have that laying around.
if you look around youtube & twitch for videos from MRRF this weekend, you may find footage of me w/ my voron 2.4/stealthchanger setup.
So I'm printing a pot for my wife. My guess is you've seen the "self watering flower pot" on thingiverse. If not, search it. Regardless - im not going to be exposing this directly to outdoor level UV light, however it will be sitting under some LED grow lights. I'm not actually sure "grow light" = UV, but assuming it produces UV do you think it'll be a problem for PLA? I know everyone says if you need it to withstand UV go with PETG, ABS, or at least not PLA. But I'm guessing at this level it wouldn't matter. I mean, it runs off a 1-2 amp 5V USB supply. It can't be that strong.
Grow lights are generally either white (mimicking the visible part of sunlight) or red+blue (i.e. magenta) to match the absorption peaks of chlorophyll.
There shouldn't be significant UV unless your LEDs are shitty (which you could potentially find with some white LED designs); plants don't photosynthesize UV, so any UV emissions wouldn't be intentional.
Thanks! Oh, that reminds me. That should be done. Gotta go take that off the printer.