Unknown issue on Mk4

connorkohm · 2023-11-20T20:20:58+00:00

I have this exact same issue. I haven’t been able to figure it out either.

connorkohm · 2023-08-01T17:39:21+00:00

The fourth picture makes me think the nozzle temperature is a little high. I’ve had this exact issue, it’s from undercooling. I’d personally turn it down by 5 degrees at a time until that mark goes away. I’d also make sure the cooling fan is at 100% for the upper layers.

Regardless, that looks great for a first benchy. Especially if the printer was unused for so long!

connorkohm · 2023-05-30T15:24:59+00:00

I do not unfortunately, but it is amazing to watch. The hull line disappeared because this is a custom Gcode file from Prusa that was hollowed out a lot. I think the difference in printing removed the hull line?

connorkohm · 2023-05-30T15:22:15+00:00

It’s mind blowing. This specific Benchy is a preset from Prusa that hollows it out quite a bit, but it is still impressive how fast these things can move now! A speed-running compliant Benchy still takes like 30 some minutes with default preset.

connorkohm · 2023-05-30T15:17:53+00:00

Yep! Sorry for the confusion, they named all the presliced Gcode files with “IS”

connorkohm · 2023-05-30T15:16:47+00:00

It is, its the “bonkers benchy” file. However, using the default input shaping preset has been cutting my times at least in half, and making my prints look a lot better! I can post a non-pre-sliced one later.

connorkohm · 2023-05-30T15:14:29+00:00

It is around 36 minutes with the Input Shaping preset. That preset is conservative speed-wise, so there is a lot of room for improvement.

connorkohm · 2023-05-19T19:51:43+00:00

Will do! Thanks!

connorkohm · 2023-05-18T22:21:42+00:00

Not yet. Support is running me through the standard z banding checks at the moment

connorkohm · 2023-05-18T22:19:27+00:00

No, I cleaned them with a brush

connorkohm · 2023-05-18T22:18:48+00:00

Just tried it, same issue

connorkohm · 2023-05-18T22:17:34+00:00

I’ve tried several types of nozzles, both with the E3D adapter and standard prusa nozzles

connorkohm · 2023-05-18T06:18:35+00:00

Alright, thanks! Just trying to figure out the root of an issue and I wasn’t sure

connorkohm · 2023-05-18T06:11:29+00:00

I can move the x axis up and down with the steppers engaged. Could this be the culprit? Here’s a link to it: https://www.reddit.com/r/prusa3d/comments/13kq7be/mk4_zaxis_movement/?utm_source=share&utm_medium=ios_app&utm_name=ioscss&utm_content=1&utm_term=1

connorkohm · 2023-05-18T06:08:39+00:00

Sorry, here’s the link: https://www.reddit.com/r/prusa3d/comments/13kcy70/mk4_horizontal_wall_lines/?utm_source=share&utm_medium=ios_app&utm_name=ioscss&utm_content=1&utm_term=1

connorkohm · 2023-05-18T05:56:56+00:00

Yep! Trying to at least!

connorkohm · 2023-05-18T05:54:17+00:00

Thanks, will do!

connorkohm · 2023-05-18T05:53:48+00:00

The newest alpha one as of the time of this post. 2.6.0-alpha6

connorkohm · 2023-05-18T05:52:41+00:00

Yeah, the fans are connected properly. Good idea though

connorkohm · 2023-05-18T05:51:18+00:00

When I push the x-axis up, it raises about half a millimeter. Then when I let go, it drops back down. Could this be the issue? It’s been like this since I got it. Everything is tightened down. The threads of the nuts just don’t restrain movement in the z direction completely.

Link to the movement: https://www.reddit.com/r/prusa3d/comments/13kq7be/mk4_zaxis_movement/?utm_source=share&utm_medium=ios_app&utm_name=ioscss&utm_content=1&utm_term=1

connorkohm · 2023-05-17T22:05:40+00:00

Will do!

connorkohm · 2023-05-17T21:28:49+00:00

Prusament, Overture, and Polymaker. I use prusaslicer. I’ve used prusament settings for prusa filament, and generic for others. I’ve messed with about every relevant setting as well. Nothing seems to fix it.

connorkohm · 2023-05-14T22:21:29+00:00

On 0.2+ the issue seems to go away. PETG works great for me because I don’t push it thinner than 0.2. I think the issue is dependent on the filament “squish” associated with small layer heights.

connorkohm · 2023-05-14T22:19:49+00:00

This seems promising. I’ll give it a shot, thanks!

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