Reddit/internet - wide, in a simple summary: (some) people are egotistical narcissistical jerks, especially minus eye contact.
Also, and additionally, "some people just want to watch the world burn."
Try printing an overhang test (like this one on Printables: https://www.printables.com/model/126029-overhang-test) It will show you what your printer can do for overhang angles.
Try orienting this with the text the right way up. From the photo, I think that reduces the severity of the overhanging part.
You may want to also reduce the layer height as well as adding support. Every layer the print head will move slightly out over nothing and extrude into the air. The only part of that line with support when this happens is where the line overlaps with the previous layer. When you reduce the layer height, it reduces how much of that line is in the air, which improves the finish.
If you have an AMS, you can also do a multi-material support. Go into supports and change the “interface layer” to PETG or support material (I’m assuming you’re using PLA here). This should prompt you to change a few settings, accept the changes. This will switch out to a new material directly below the overhang for one layer, which will improve the finish a lot, but it does add a lot of printing time.
The final option is to use the “place on face” tool to reorient the part so there is no overhang/it is reduced. Sometimes I will even cut a piece in two and glue after just to avoid steep overhangs that I think will cause finish problems.
It's not clear to me which orientation OP printed in, but I agree that with text the right way up it looks as if it would have little overhang and minimal (no) support requirement
If you downloaded this from a printing site, the users usually put their printing parameters in the description to help. If you can look again, you might find some good information for optimal orientation as well as if supports should be enabled.
I don't believe supports are going to help with your outer layers on the 1st photo. It's vertical isn't it? You don't need support on a vertical print. The 2nd picture yes you should organic tree.
Nice catch. I didn't pay attention to the layers grain.
However, aren't 3d printers with their fancy part cooling fans and software supposed to be able to bridge lines?
Based on the print lines I think maybe too steep of an angle/not enough cooling. I would def try some supports or see if this can be redesigned so that the hanging section can be printed flat and then attached to the base later on.
Since there aren't any proper answers here yet...do some overhang tests and see if you can nail down settings that improv your overhang angle. What printer are you using? Maybe your cooling is off for some reason, try slicing at different layer heights or variable layer heights for the overhang sections, examine your sliced gcode preview and make sure the toolpaths look right and cooling fan speed for those sections is where you expect.
There's a number of test print models available online. Printing one of these will show what your filament/settings look like so you can plan ahead.
https://www.thingiverse.com/thing:2656594
You can find a bunch of test prints online. Like others said, supports will work too but that looks like a 45 degree overhang which any bambu printer should handle out of the box fine. What printer and filament are you using?
Check time spend per layer.
I'm like 95% sure that right after it finishes printing the base, it starts putting down layers a lot faster one after another and that's just too fast for this filament.
You shouldn't have *any* problems with a 45⁰ angle, this is just a problem of speed. If you want to keep the same speed, you need to increase cooling, either by lowering hotend temp or moving a higher volume of air. If you can't do either of those (maxed out fan, filament stops bonding together), then you need to slow down.
This is exactly what my prints looked like when I didn't plug in my parts cooling fan back in correctly recently, so it wasn't turning on at all. Make sure it's running when printing.
Looking at the model I'm curious if that is the bottom area? Was that area floating without supports? If that is the top I would recommend adjusting your belts.
It is definitely an overhang issue, yes supports would help but then you won’t get a perfect finish.
Looking at the model OP, you might be able to print that without supports but you might need to print it in a different orientation- I would try doing just one of the models but do it upright on the bed (with ryobi logo right way up), the angle on the overhead doesn’t look too bad you might get a clean print.
Did you do these together at the same time layer by layer or individually by object? I find that my P1P does better by object when the print has overhangs or steep angles. Idk why but it does. Also sometimes the thing is just too fast for its own good and it needs to be slowed down.
Have you changed nozzles by any chance since you got your printer?
I ask because I did, followed the instructions, but evidently the part fan connector wasn’t perfectly on so it just didn’t run. No error messages or anything it just never came on. Had lots of failures that looked like this where it printed perfectly for a little bit then the layers would start to look progressively messier. Make sure you can toggle that fan on and off manually!
I would check the nozzle temp and cooling fan. I have found that different filaments from different sources need wildly different temp, flow rate, and box temp.
It looks like the one section sagged from poor cooling which could also be from the filament being too hot.
I print with TPU a lot, which is a very finicky material, and temp and flow rate change depending on the spool i'm using. I just keep the fan at 100% all the time with TPU to eliminate that variable.
Not enough cooling on overhangs.
Maybe you didn't tick detect overhang walls. Or you need to increase the cooling for overhangs.
And if the cooling it's already maxed out, you will need to slow down the print.
It should be mandatory when asking for trouble shooting to provide some details. Filament, speed, temps, questions like this get random guesses or off topic answers. To me this looks like dripping filament caused by to steep overhang, printing to hot or less cooling but also to fast. So almost everything so please provide as much settings so we can point in right direction.
I had a similar problem once printing in PETG and I couldn't work out what was causing it. Then I turned the part fan on for the print and low and behold, I got a little bit of stringing but other than that, it printed beautifully
Sometimes slowing it down helps or cleaning the nozzle. They give this needle and there are instructions regarding heating the nozzle then placing the needle inside to clean out anything
I'll be honest with you. Just calibrate. Flow dynamics and pressure advance, and make sure your ambient air temp is the same every time you print that material. And good lord, what size layers are those?
This is caused by overheating certain parts of the print. Last layer have not been fully solidified and next layer start moving it around because of the surface tension. You have bad orientation and slicer slows print down causing this fix uour orientation
It's nearly impossible to be certain from just the pic alone but if this is for battery holders I wouldn't use PLA and opt for PETG ABS or ASA. The one side that has poor surface quality is likely the aux fan. The wobble is from poor adhesion. Use glue or another plate and instead of using fans to cool it run it with the top glass off aux fan off and it should print better.
Not sure, but I have a strange urge for a chocolate flake now
Im glad I’m not the only person
Was tempted to say the TimTam has been left out of the fridge for too long.
does have a chocolate look. my daughter felt it was more of a poop brown
The first picture looks just like a a nice bit of chocolate. The other two pics not so much haha
I was going to say, not enough fiber in your diet.
Snickers did come in my mind…
I was going to say Shawarma
It's a fancy hot glue gun. If you squeeze it in the air it's gonna droop.
thats it
Are you using supports for that section of the part?
I didn't use supports. I'll try reprinting and give that a try.
Why are people downvoting that you are willing to try again with supports?
This subreddit is toxic. They will downvote anything and everything. Including this comment.
Exactly. Both subs expect everyone to know everything.
Reddit/internet - wide, in a simple summary: (some) people are egotistical narcissistical jerks, especially minus eye contact. Also, and additionally, "some people just want to watch the world burn."
This comment can’t get enough upvotes.
I rest my case.
lulz, and of course 2 people downvote me for agreeing with you.
People are downvoting that he didn't use supports, not thay he is willing to try again. Not that I share that opinion.
Try printing an overhang test (like this one on Printables: https://www.printables.com/model/126029-overhang-test) It will show you what your printer can do for overhang angles.
That's why I love this hobby and this sub. It's all about learning and sharing knowledge, and making cool stuff, like drippy poop statues.
Try orienting this with the text the right way up. From the photo, I think that reduces the severity of the overhanging part. You may want to also reduce the layer height as well as adding support. Every layer the print head will move slightly out over nothing and extrude into the air. The only part of that line with support when this happens is where the line overlaps with the previous layer. When you reduce the layer height, it reduces how much of that line is in the air, which improves the finish. If you have an AMS, you can also do a multi-material support. Go into supports and change the “interface layer” to PETG or support material (I’m assuming you’re using PLA here). This should prompt you to change a few settings, accept the changes. This will switch out to a new material directly below the overhang for one layer, which will improve the finish a lot, but it does add a lot of printing time. The final option is to use the “place on face” tool to reorient the part so there is no overhang/it is reduced. Sometimes I will even cut a piece in two and glue after just to avoid steep overhangs that I think will cause finish problems.
It's not clear to me which orientation OP printed in, but I agree that with text the right way up it looks as if it would have little overhang and minimal (no) support requirement
If you downloaded this from a printing site, the users usually put their printing parameters in the description to help. If you can look again, you might find some good information for optimal orientation as well as if supports should be enabled.
I don't believe supports are going to help with your outer layers on the 1st photo. It's vertical isn't it? You don't need support on a vertical print. The 2nd picture yes you should organic tree.
Nice catch. I didn't pay attention to the layers grain. However, aren't 3d printers with their fancy part cooling fans and software supposed to be able to bridge lines?
Ish… it can sort of do that but it ain’t magic
Based on the print lines I think maybe too steep of an angle/not enough cooling. I would def try some supports or see if this can be redesigned so that the hanging section can be printed flat and then attached to the base later on.
2 for supports. will definitely try that and see how it goes. thank you!
Oh I know exactly what this is.... You need to go in to settings and turn off 'Snickers' mode or this is going to keep happening... =P
Did you have it on "Twix" mode?
Chocolate?
Since there aren't any proper answers here yet...do some overhang tests and see if you can nail down settings that improv your overhang angle. What printer are you using? Maybe your cooling is off for some reason, try slicing at different layer heights or variable layer heights for the overhang sections, examine your sliced gcode preview and make sure the toolpaths look right and cooling fan speed for those sections is where you expect.
How do you go about doing overhang test?
There's a number of test print models available online. Printing one of these will show what your filament/settings look like so you can plan ahead. https://www.thingiverse.com/thing:2656594
You can find a bunch of test prints online. Like others said, supports will work too but that looks like a 45 degree overhang which any bambu printer should handle out of the box fine. What printer and filament are you using?
I was thinking nozzle temp was to hot for filament being used.
I have a P1S. Although I'm not I'm not OP.
Definitely a support problem
Man this is the wrong place to ask. I'd go ask your doctor and make sure to show him these pictures and ask him what's wrong with your stool.
Check time spend per layer. I'm like 95% sure that right after it finishes printing the base, it starts putting down layers a lot faster one after another and that's just too fast for this filament.
Nailed it!
You have to give some details, like what filament it was, print temperatures, print settings, etc.
Did you swap diameter of nozzle. If you didn't swap it in the printer settings things like that could happen
Saw the ltt video as well
Lol, the thumbnail looked like brisket to me. Then I was sad.
Anyone got something to eat...?
Clearly cake frosting mode was selected
Thought it was a milky way chocolate bar at first
You shouldn't have *any* problems with a 45⁰ angle, this is just a problem of speed. If you want to keep the same speed, you need to increase cooling, either by lowering hotend temp or moving a higher volume of air. If you can't do either of those (maxed out fan, filament stops bonding together), then you need to slow down.
This is exactly what my prints looked like when I didn't plug in my parts cooling fan back in correctly recently, so it wasn't turning on at all. Make sure it's running when printing.
Looking at the model I'm curious if that is the bottom area? Was that area floating without supports? If that is the top I would recommend adjusting your belts.
It is definitely an overhang issue, yes supports would help but then you won’t get a perfect finish. Looking at the model OP, you might be able to print that without supports but you might need to print it in a different orientation- I would try doing just one of the models but do it upright on the bed (with ryobi logo right way up), the angle on the overhead doesn’t look too bad you might get a clean print.
At first I thought I was looking at a piece of clay.
Did you do these together at the same time layer by layer or individually by object? I find that my P1P does better by object when the print has overhangs or steep angles. Idk why but it does. Also sometimes the thing is just too fast for its own good and it needs to be slowed down.
https://preview.redd.it/o6apk2qheq3d1.jpeg?width=188&format=pjpg&auto=webp&s=e4bfefa00ee885db25bdb570e01a464b81bf40a7
Have you changed nozzles by any chance since you got your printer? I ask because I did, followed the instructions, but evidently the part fan connector wasn’t perfectly on so it just didn’t run. No error messages or anything it just never came on. Had lots of failures that looked like this where it printed perfectly for a little bit then the layers would start to look progressively messier. Make sure you can toggle that fan on and off manually!
Lack of support. Is this a Ryobi tool holder?
I would check the nozzle temp and cooling fan. I have found that different filaments from different sources need wildly different temp, flow rate, and box temp. It looks like the one section sagged from poor cooling which could also be from the filament being too hot. I print with TPU a lot, which is a very finicky material, and temp and flow rate change depending on the spool i'm using. I just keep the fan at 100% all the time with TPU to eliminate that variable.
Not enough cooling on overhangs. Maybe you didn't tick detect overhang walls. Or you need to increase the cooling for overhangs. And if the cooling it's already maxed out, you will need to slow down the print.
The part is made of chocolate and it's 100 degrees outside.
Too much overhang , try lower temperature and pump the fans up , night help.. or supports
YOU NEED SUPPORT
Forbidden chocolate
I would check the part cooling fan
Filament. I dare say it could be a 3d printer
I think the Caramel spool in your AMS is out.. you should try nougat for supports
It should be mandatory when asking for trouble shooting to provide some details. Filament, speed, temps, questions like this get random guesses or off topic answers. To me this looks like dripping filament caused by to steep overhang, printing to hot or less cooling but also to fast. So almost everything so please provide as much settings so we can point in right direction.
Did you print outer/inner or inner/outer?
I had a similar problem once printing in PETG and I couldn't work out what was causing it. Then I turned the part fan on for the print and low and behold, I got a little bit of stringing but other than that, it printed beautifully
Sir, you can’t put chocolate in there
not enough fiber in your diet?
Mine was doing this, I had a worn out nozzle and swapped to my spare and it works great now
I just bought a Twix
It's an Art sculpture ?
I got rid of this happening to mine by slowing down overhands by as well as by cleaning the carbon rods thoroughly
Did you place support?
Sometimes slowing it down helps or cleaning the nozzle. They give this needle and there are instructions regarding heating the nozzle then placing the needle inside to clean out anything
Probably just not enough cooling. I solved a similar issue also with a 45° overhang by turning on the aux fan from 0° to 50%
That's a Twix he had in his rear pocket and forgot about it....3hr rule...still edible...lmao
Thinner layer height might also help if you don’t want to mess with supports.
I'll be honest with you. Just calibrate. Flow dynamics and pressure advance, and make sure your ambient air temp is the same every time you print that material. And good lord, what size layers are those?
This is caused by overheating certain parts of the print. Last layer have not been fully solidified and next layer start moving it around because of the surface tension. You have bad orientation and slicer slows print down causing this fix uour orientation
Hhhm...that looks...crunchy 😋. Now i want chocolate 😮💨
Slow down your print cos i think you are printing fast without enough cooling, especially on overhangs
It's nearly impossible to be certain from just the pic alone but if this is for battery holders I wouldn't use PLA and opt for PETG ABS or ASA. The one side that has poor surface quality is likely the aux fan. The wobble is from poor adhesion. Use glue or another plate and instead of using fans to cool it run it with the top glass off aux fan off and it should print better.