Benchy trouble shooting
I have been working on the 3DBenchy
Depending on the detail level (0.1 or 0.2 mm), i'm getting totally different issues. (using the same profile in S3D)
0.2 detail level: on both surfaces, i'm getting small holes.
I'm getting exactly 1 hole per layer and the small hole can be anywhere on the print.
I tried printing with 2500 mm/s 60% outline and 3000 mm/s 60% outline and i had the same issue.
0.2 groot (look at the head with small holes)
0.1 detail level: The front piece seems to have flawless sides but the back side is completely messed up.
I'm getting this issue everytime i print with those settings.
People talked about turning the print, but it doesn't look like a good long term solution.
Are these kind of issue related to my calibration or my slicing parameters?
Re: Benchy trouble shooting
Hello Elliot!
Could you attach the photos directly in this forum for future reference? And also give a short explanation of the problem?
/Henrik
Re: Benchy trouble shooting
I am guessing this is a slicer settings issue, but you did not say if it does this on the pre-sliced files or not. If the pre-sliced files print fine, then it is your slicer settings. If it does has issues on the pre-sliced files, then it is a hardware issue. Please provide us details of what your are seeing/doing.
Have you calibrated your extruder?
Are you in a humid environment? If the PLA picks up water from the environment, the water can boil off in the extruder creating little holes. Keeping the filament dry (you can bake it out in a very low oven) can be important if you are in a humid environment.
Having to click on each of your images, and then going back, will prevent some of the experts here from even viewing your question. If you use the "attachments" feature of the forum, the images will be inline and will be easier to see, and will persist for others who have issues later - even if your imaging site goes away.
Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage or loss. If you solve your problem, please post the solution…
Re: Benchy trouble shooting
Thanks to both of you. I added the image inline and i tried to add an extra description.
@aaron
I am guessing this is a slicer settings issue, but you did not say if it does this on the pre-sliced files or not. If the pre-sliced files print fine, then it is your slicer settings. If it does has issues on the pre-sliced files, then it is a hardware issue. Please provide us details of what your are seeing/doing.
Is there a presliced 3DBenchy that's available? That would be lovely. I tried the scli3r PE with the default printer settings and the print had more issues so i moved to S3D with a profile found on this forum.
Have you calibrated your extruder?
I did measure 100 mm on my filament and determined my extrusion multiplier is at 1.07
I'm new to 3d printing. Are there any other calibration i can do for the extruder?
Are you in a humid environment? If the PLA picks up water from the environment, the water can boil off in the extruder creating little holes. Keeping the filament dry (you can bake it out in a very low oven) can be important if you are in a humid environment.
I'm in a room dedicated to the printer and the window are closed. I don't think the PLA is yet since there is exactly 1 small hole per layer and i'm not getting the issue on my .1 prints.
I plan on making an enclosure and i would like to create a seal box for my filament as well.
Re: Benchy trouble shooting
Is there a presliced 3DBenchy that's available? That would be lovely. I tried the scli3r PE with the default printer settings and the print had more issues so i moved to S3D with a profile found on this forum.
There is not, but here is one I sliced. so you can see if it helps you. (I am not a professional, so this is just one I sliced, but it printed very nicely on my printer.) (This file contains a Benchy and a test cube and some clips - it is what I have sitting around - it is the only sliced Benchy I have tested. Sorry. If you don't want a bunch of other prints at the same time don't print it. But this Benchy came out nice. Used Slic3r.)
What problems were you having with Slic3r? I have found it to be very reliable.
You might want to post your S3D settings - I am sure some S3D user might comment.
Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage or loss. If you solve your problem, please post the solution…
Re: Benchy trouble shooting
There is a setting that is called "Seam position" and set to random you will get those small holes distributed all around the printed object. I think however that a lower layer size may hide those imperfections better. I do not know how others' printed object look like, but the printer has to begin somewhere and stop somewhere on the perimeter and that can be challenging for the extruder to use a precise flow of plastic - not to mention the precise movements that the steppers have to do. The steppers themselves may have something like 5% accuracy in step size (deviation from 1.8 degrees per impulse).
/Henrik
Re: Benchy trouble shooting
There is a setting that is called "Seam position" and set to random you will get those small holes distributed all around the printed object. I think however that a lower layer size may hide those imperfections better. I do not know how others' printed object look like, but the printer has to begin somewhere and stop somewhere on the perimeter and that can be challenging for the extruder to use a precise flow of plastic - not to mention the precise movements that the steppers have to do. The steppers themselves may have something like 5% accuracy in step size (deviation from 1.8 degrees per impulse).
/Henrik
When i print with 0.1 detail, i see no holes but i have other issues that won't show up at 0.2
This is the backside of the print at 0.1. It's not looking good 😮
Re: Benchy trouble shooting
There is a setting that is called "Seam position" and set to random you will get those small holes distributed all around the printed object. I think however that a lower layer size may hide those imperfections better. I do not know how others' printed object look like, but the printer has to begin somewhere and stop somewhere on the perimeter and that can be challenging for the extruder to use a precise flow of plastic - not to mention the precise movements that the steppers have to do. The steppers themselves may have something like 5% accuracy in step size (deviation from 1.8 degrees per impulse).
I didn't understand at first. I just used a profile that didn,t use random seam position and it looks pretty good.
I'm going to try 0.1 with the same profile see if it fixes my previous issues.
Tried using a S3D profile from someone on thinginverse
Re: Benchy trouble shooting
The exact same profile but with 0.1 mm rather than 0.2 mm layer height is giving something completely different.
Re: Benchy trouble shooting
How does the first layer look like on the objects that you have printed?
Could you attach photos of the first layers - preferably close ups?
/Henrik
Re: Benchy trouble shooting
How does the first layer look like on the objects that you have printed?
Could you attach photos of the first layers - preferably close ups?
/Henrik
Thanks for taking the time to help me out 🙂
Every time i switch from 0.2 mm to 0.1 mm, i have to manually do a live adjust of the Z of + 0.25 ish
0.1 bottom
0.2 bottom
Re: Benchy trouble shooting
On the Prusa i3 MK2(s), the first layer should not be lower than 0.150mm.
Re: Benchy trouble shooting
On the Prusa i3 MK2(s), the first layer should not be lower than 0.150mm.
I changed my first layer width in S3D to 200% and i didn't need to adjust the Z, but the first layer wasn't as nice as a first layer at 0.2 mm. It feels pretty rough.
The other option is to lower the first layer height a little bit to get the equivalent of adjusting the Z.
I'm going to try something like this: https://www.thingiverse.com/thing:1906567/#made
Re: Benchy trouble shooting
I'm going to try something like this: https://www.thingiverse.com/thing:1906567/#made
I would not want something that was printed on my printer to wrap around the nozzle, that close to the heat-block. Sounds like it would burn or melt and might very likely ruin prints.
If you want something to protect your hotend, try this:
If you want an improved cooling fan, try this:
https://www.thingiverse.com/thing:2276997
Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage or loss. If you solve your problem, please post the solution…
Re: Benchy trouble shooting
The 0.1 print seems to have a rough first layer and I think the layer width should not be adjusted so much. I have layer width set to 0.55 and have a 0.4 mm nozzle. If the first layer is rough I also think this might propagate to the layers above and may have an impact on print quality. I have confirmed this on one print on my printer.
/Henrik
Re: Benchy trouble shooting
I would not want something that was printed on my printer to wrap around the nozzle, that close to the heat-block. Sounds like it would burn or melt and might very likely ruin prints.
If you want something to protect your hotend, try this:
If you want an improved cooling fan, try this:
https://www.thingiverse.com/thing:2276997
I built and installed the improved cooling fan 🙂
I'll try to order a silicone sock tonight.
The 0.1 print seems to have a rough first layer and I think the layer width should not be adjusted so much. I have layer width set to 0.55 and have a 0.4 mm nozzle. If the first layer is rough I also think this might propagate to the layers above and may have an impact on print quality. I have confirmed this on one print on my printer.
/Henrik
I switch to the default Slic3r PE which seems to do a regular 0.2 mm for the first layer and the rest with 0.1mm
I think i was over extruding because now im back with only the front mess.
According to this video:
It could be filament and cooling related. I used the new improved cooling fan so i'll try to move away from the prusa stock filament and get a different brand to test out.
Re: Benchy trouble shooting
Glad to have found this thread. I have the same problem. I used Simplify3d to slice, all goes well with 0.20 layer height, but the front part of the boat becomes rough with 0.10 layer height.
I also had the little holes with 0.20 layer height and fixed it having the extruder start at the same point for each layer. As someone already suggested, its indeed a seam starting thing.
I played with different temp's and also different orientations on the print bed. I am using the supplied prusa pla. Btw, I created a special stl file, which only prints the front part of the boat, takes 20 min, which is a lot quicker than the whole benhcy.
I plan on adding more cooling temporary, and change filament. Dont realy know what else I can do.
Here are my problem cases
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Re: Benchy trouble shooting
I played with different temp's and also different orientations on the print bed. I am using the supplied prusa pla. Btw, I created a special stl file, which only prints the front part of the boat, takes 20 min, which is a lot quicker than the whole benhcy.
I'd be interested in trying this half benchy!
I just received new filament and the result is much better but i still have this issue at a smaller scale.
My next step is to lower my temperature further.
This PLA is 180-210 degree and it was at 200.
my default sprint speed is 50 mm/s
outline 80%
infill 80%
Re: Benchy trouble shooting
I included my Benchy file. Btw your print looks better with the new filament.
Did you also try to
- print at a lower speed (at least for the outer perimeter)
- try facing the model a different way, eg. facing the bow to the backside of the printer
