poor print quality  

Re: poor print quality

Wow, so jealous of your ring-free prints! I get ringing on pretty much every print where there is a hole or sharp corner. Reducing print speed helps, but doesn't completely solve it.

The prints still look great. A laymen/regular person would probably not notice ringing at all... but it stands out to me, since its my own printer.

Could you print a Benchy with the standard 200um settings in Slic3r PE? I'd be really curious to see how your windows and doors turn out... my get some pretty prominent rings.

This is what I would also like to see! Facing to the right! And it would be important to use the stock settings on Slic3r - so we can see how a "perfect" hardware would print like.

Re: poor print quality

Well my rods and bearings arrived from Misumi this morning and I’ve swapped them over. As you can see from my same test print I no long have any issues on my X or Y yay! Everything seems to be working just as good as my MK2 now.

I also spent time making sure the X belt was better lined up at the back and that no longer rubs or squeaks anymore

Currently printing Marvin as a final comparison

That's looking good.

Keep us posted as you make more and more prints!

Here is a quick print I did using the S3D profile and a few tweaks. It was done with octoprint and the latest firmware Josef shared with linear advanced disabled. There is slight ringing it think but not as bad as it was before and I think that Just comes with printing at higher speeds.

2 perimeters and 10% infill and outer perimeter printed at 60mms but it did adjust it slower for the ears and head towards the top

Re: poor print quality

Wow, so jealous of your ring-free prints! I get ringing on pretty much every print where there is a hole or sharp corner. Reducing print speed helps, but doesn't completely solve it.

The prints still look great. A laymen/regular person would probably not notice ringing at all... but it stands out to me, since its my own printer.

Could you print a Benchy with the standard 200um settings in Slic3r PE? I'd be really curious to see how your windows and doors turn out... my get some pretty prominent rings.

This is what I would also like to see! Facing to the right! And it would be important to use the stock settings on Slic3r - so we can see how a "perfect" hardware would print like.

Sure I'll do one in a few hours its currently printing atm 🙂

Re: poor print quality

Wow, so jealous of your ring-free prints! I get ringing on pretty much every print where there is a hole or sharp corner. Reducing print speed helps, but doesn't completely solve it.

The prints still look great. A laymen/regular person would probably not notice ringing at all... but it stands out to me, since its my own printer.

Could you print a Benchy with the standard 200um settings in Slic3r PE? I'd be really curious to see how your windows and doors turn out... my get some pretty prominent rings.

Here is one facing forward like in the new MK3 gcode files. I can do one pointing to the right next.

Re: poor print quality

Here it is printed on its side. The rear side where the cooling is hard to reach is a bit uneven but overall not too bad.

Re: poor print quality

Is this 0,2mm layer?

Re: poor print quality

I should have mentioned that mine does the exact same thing (X axis belt twists back and forth). Mine also has a slight buzz from time to time which I think is the pulley rubbing in the z bracket. I haven’t really tried to mess with it yet but I agree that it doesn’t seem like there’s much I’ll be able to do.

Ryan,

note that mat1uk UK3DP has posted a video about the issue and makes the case that the problem is tied to the way in which the x-axis belt is mounted on the pulley side of the extruder housing (i.e., that it’s easy to push that end of the belt in too far). That part of his video can be viewed here:

Ken

Re: poor print quality

I should have mentioned that mine does the exact same thing (X axis belt twists back and forth). Mine also has a slight buzz from time to time which I think is the pulley rubbing in the z bracket. I haven’t really tried to mess with it yet but I agree that it doesn’t seem like there’s much I’ll be able to do.

One more thing... during Tom Sandladerer’s review of the assembled i3 MK3 ( ), someone in the chat (Fox7ox7)mentions that his belt is twisting (just like mine and others) and Tom says “No that does not affect print quality in any way.”

Re: poor print quality

Is this 0,2mm layer?

yeah 0.2 default MK3 profile from the latest slic3r

Re: poor print quality

Wow, there seems to be a lot of work you need to do to get a new printer to print nicely. This seems especially true with the MK3.

I am wondering if I should have my order changed for a MK2S instead of the MK3. Via the spreadsheet, I am getting close to my turn so I don't have much time.

My MakerBot mini just works. Yes it is pricey and small which is why (along with the Make: reviews) I decided to go with the Prusa.

Any thoughts?
Terry

Re: poor print quality

Just wanted to show you guys this. Brand new to 3D printing and built from a kit, this guys machine is killing it. One of the best benchies i have ever seen.

https://www.reddit.com/r/3Dprinting/comments/7q024u/got_my_first_ever_printer_prusai3_mk3_kit_and/

Re: poor print quality

Just wanted to show you guys this. Brand new to 3D printing and built from a kit, this guys machine is killing it. One of the best benchies i have ever seen.

https://www.reddit.com/r/3Dprinting/comments/7q024u/got_my_first_ever_printer_prusai3_mk3_kit_and/

Good to see. I’m confident we will all get there. Note that 0.2 benchy prints a bit cleaner in my experience.

Re: poor print quality

I also have ringing on X axis but they are gone in Stealth mode and 50% print speed, now just the right X axis pulley problem and over extrusion.

I would say it is definitive firmware problem, the MK3 in OOTB contrition w/o adjusting any settings compared to MK2S has bad print quality, ringing, over extrusion, X axis belt rubbing on the right pulley.

It is bad that Prusa rushed with bad printed parts and low quality bearings/rods, I liked my MK2S but sold it hopping to get better printer with MK3 but for now I'm disappointed.

The new frame is great (comparable to Haribo frame) but parts and print quality got worst with Prusa success.

Re: poor print quality

I also have ringing on X axis but they are gone in Stealth mode and 50% print speed...

Been researching this awhile now, and the persistent vertical lines aren't ringing. I compiled the firmware myself with ultra low jerk settings and they are still there. From what I can see in numerous places online, this is a stepper/driver/segment/step issue of some type. If you print at ultra slow speeds you will see them become less noticeable, but still there and at the same distance. It irks me because it makes all my PETG glossy prints look like crap.

EDIT: Look close at the Benchy pics above. You can see it there too, just not as noticeable due to the matte filament, but it's definitely there around the bow.

Re: poor print quality

I also have ringing on X axis but they are gone in Stealth mode and 50% print speed...

Been researching this awhile now, and the persistent vertical lines aren't ringing. I compiled the firmware myself with ultra low jerk settings and they are still there. From what I can see in numerous places online, this is a stepper/driver/segment/step issue of some type. If you print at ultra slow speeds you will see them become less noticeable, but still there and at the same distance. It irks me because it makes all my PETG glossy prints look like crap.

EDIT: Look close at the Benchy pics above. You can see it there too, just not as noticeable due to the matte filament, but it's definitely there around the bow.

yeah, now I can see it the "ringing" on the benchy.

I printed in stealth mode with 30% speed and could still see then, barely but still.
So is it hardware or something that can be with software resolved?

BUT I see the "ringing" only on the X axis, not on Y

I wonder if I swap the X and Y cables if I can reproduce the "ringing" on Y, I may try when I get home.

Re: poor print quality

BUT I see the "ringing" only on the X axis, not on Y

I wonder if I swap the X and Y cables if I can reproduce the "ringing" on Y, I may try when I get home.

If you get any interesting results, I have a Github issue open here if you'd like to add details: https://github.com/prusa3d/Prusa-Firmware/issues/428

Re: poor print quality

Since I'm new to this, can someone point out where in that benchy you see ringing?

Re: poor print quality

Since I'm new to this, can someone point out where in that benchy you see ringing?

I was thinking the same thing as I think I'd be pretty happy with that. Though the more I think about it the more I don't want to know as it may be one of those once you see it you can't unsee it situations that will apply to everything I print.

Re: poor print quality

Since I'm new to this, can someone point out where in that benchy you see ringing?

Dropping the sharpness on the image made it more apparent, look at the dark waves coming off the point of the ship:

I know this may seem like nitpicking, but this gets waaaaaaaaaaay worse on glossy prints:

The above image was done with jerk dropped to 5 (B150 firmware recently dropped it to 10). You can clearly see where my ghosting starts/stops off the "Y", the lines beyond that are persistent down the length of the part.

Re: poor print quality

OK now I see, thanks.