3D Print Gulag

[tight river]

I agree with that 100%

[slender oasis]

are you making space ship sounds as you fly it around?

[humble terrace]

I have a nicd razor that's still mostly working probably 25-30 years later.

[strange moss]

OOOOOH hell yeah

Have you played Osiris Reborn?

Anyways, I'm having some 3D printing trouble on my newest print .. wondered if any of you guys know what's causing these weird issues

Even though I ran through the full calibration cycle, bed leveling, and bed heating / clogging prevention, it's still doing these weird fraying issues

(I have the Bambu Labs H2C)

[fresh plume]

Not enough info to work with but that could be a slicing issue, try to print a calibration cube and see what you get

[slender oasis]

looks like I got a new 3d printing project. I just went looking to buy a clothes drying wrack (aka clothes horse) and for some reason they have gotten kind of expsensive and of course even cheaper and junkier then they used to be. just not worth buying something that is so poorly made that it will break after a few uses.
so 3d printed brackets and hinges and a bunch of dowel rod I think. make my own for cheaper and better quality

[mossy urchin]

What filament?
PLA?
High Flow?
Looks to me like cooling might've been obstructed and the line width / extrusion speed might be a tad too much

[slender oasis]

line width dosnt doo that. I print at 0.6 and 0.8mm lines from a 0.4mm nozzle all the time and I have never seen that defect. really not sure what would cause that other then maybe pressure advance being WAY out of tune

its clear that its having some kind of extrusion problem after changes in flow rate from corners and similar features

I often see under extrusion after corners but that looks like either extream over extrusion or for some reason the layer adhesion is horrible and the line is getting dragged off with the nozzle

[strange moss]

PLA, yeah

Default flow, 100% print speed.

I de-moistureized my AMS down to 5% last night, seemed to fix it

[swift scroll]

Alien tech !

This is a 1000HP electric car motor …..

It weighs … 12KG/28 lbs

750KW

Its half of that contineous instead of peak, but that would still be an insane amount with 4 of them on a car …

Or two on a electric bike 😱

Their also working on a version capable of regenerating/braking more efficient then a ceramic race brake.

[formal cloak]

I want 2 of those on my Hayabusa

[swift scroll]

a single of those is more power then a pro superbike 😅

actually, twice as much power 💀

[formal cloak]

You know why I want 2?

Even if you set them both to 10% power, you still have a 2WD bike😏

[brisk moth]

ughhh. dropped an m2 screw in my amongst the scrap/failed prints on my desk 🙁

(I am not the best about disposing of them. or even getting them off my desk)

[swift scroll]

id absolutley love a hybrid car, that has no normal brakes, just regenerative braking

[swift scroll]

also, have fun finding that

i have sveral m2s somewhere on my floor in my workroom 😅

i gave up on that and got a large box of random length m2s.

[brisk moth]

Luckily it didn't get lost in the infill of a failed print, it made it all the way to the desk surface underneath

[swift scroll]

as those are Gone if dropped 😅

[swift scroll]

thats just extra weight ! 🙂

[brisk moth]

Lost an m1.5 or something (m.2 screw) on the floor a few weeks back. That things gone

[formal cloak]

Regen braking sucks at low speeds unless tuned properly 😅

I would love a plug-in hybrid with 4 of these motors so I can have an independent 4WD car😅

[brisk moth]

6 of them. Make a 6x6 😆

[swift scroll]

Only worry is that thes motors likley cost more then my car, Per motor 😅

[brisk moth]

Anywho, time to 3d print this heatsink mount out of pla 😆 (it uses m2 screws, since that's what the backplate and heatsink both use)

I have an old accelero s2 I want to try mounting to a 15w laptop cpu. since all laptop coolers are bad in every metric

(yes I know pla doesn't deal well with temperature. But it's a great prototyping material. )

[swift scroll]

Indeed, do not use pla for more then the prototype prints

It softens at 55-65c depending on what filament, not optimal for a heatsink mount

Ontop of not handling sustained mechanical loads

So mount pressure after a little while will be horrible 😅

aka Structural Creep

https://www.youtube.com/shorts/Hg7Y_m9olhc

[brisk moth]

Well it fits. Just ignore that it's missing two of the screws (holes need to be moved by... 0.5mm or so). Annoyingly it doesn't turn on. Lights up for a few moments then clicks off

dont ask whats going on with those fins. younger gruzzob thought it would be fun to try and increase the density and stick a fan on it. got... about as far as you can see

[swift scroll]

it may have a snesor to detect if the chassi is open

[brisk moth]

this is equivalent to how I had it running for... several years.

[swift scroll]

or error out becuse it does not detect a keyboard

ah ok

[brisk moth]

This was it in it's previous life.

also not the original heatsink

it may be a keyboard issue. its had a wireless keyboard connected the whole time, and being a laptop it may not show diagnostic/debug/bios information on a plugin display.

cbf trying to figure out if any of my laptop displays have the right edp connector at the moment

I am fairly sure I buggered something about its fan controller at some point. the rpm readout is offset

(yes there is no fan visible in either image)

I had always planned on setting one up for it, but it just.. never needed it. I could run full cpu stress tests on it when it had that big copper monstrosity and it barely warmed up

[humble terrace]

Now I just need three of them, one for each wheel on my recumbent trike

[formal cloak]

8x8, 4 axle steering

[brisk moth]

or make your own! https://www.youtube.com/watch?v=6pnCrnvvXHQ

[slim sandal]

Any one knows about paht filament?

[fresh plume]

I know a good but

Bit

[fresh plume]

What's the question?

[slim sandal]

I was wondering how it compares to other engineering filaments like asa

[hoary siren]

I love printing.

After spending 30 mins redoing some supports on the supports of a mini cause they wouldn't print, I just now realised that the true solution for that issue was left-click -> "Fix model pls"

[slender oasis]

lol, I have learned that lesson as well. got in the habbit of checking for that little ! sign next to any model I open in the slicer

even models I made my self and know are good still sometimes end up with weird errors in them after export that need fixed

[tight river]

Anyone keeping up with the shitshow Bambu got themselves into?

[slender oasis]

yep

[slender oasis]

they decided to push the BS they did last year even further and the opensource people and right to repair people got fed up and are now going after them big

[hoary siren]

I didn't follow shit (and own a bambu), what's going on ?

[slender oasis]

a while back someone posted a fork of Orca slicer that reenabled the networking stuff that bambo had blocked. they threatened him with legal action dispite what he did being covered under the opensource license that bambu is required to comply with for there slicer. he took it down but some open source advocats got pissed about this and started making a stink and its just blowing up specatularly in bambu's face

[hoary siren]

Oh ok I don't really feel concerned then

[mossy urchin]

Now Louis Rossman Is hosting that fork and dared them to sue him (he's known for being in legal battles advocating for right to repair and such)

Wholehartedly support this

[tight river]

Yup, and the Software Freedome Conservancy has pledged to reverse engineer bambu labs and release it. They're also actively gonna monitor Bambu for more illegal shit. They actually got the technical and legal know-how to do all that

[slate river]

Hmm, first time printing ASA and my infill doesn't seem to bond to itself, and I didn't play arount with any of those settings...

[formal cloak]

Looks a bit like not hot enough print head

[slate river]

I think it was Set to 270°C
But I have to look, how to disable the fans or how to set the chamber temperature in Orca.

[mossy urchin]

Thats weird, do you have a heated chamber?
What are your fan settings?

I recommend, limiting fan speed to 0-10%.
10% is enough for most minor overhangs and allows for good layer and bed adhesion.
Also be sure to crank the bed to 110°C+, if possible.
If not possible or you're on engineering plates, use water-soluable spray adhesive.

FYI: your outer walls seem to have turned out fine because of your layer adhesion issues but expect warping off the bed at sharp corners, especially with linear infill.

(See my bygone struggles here)
#1058874733610946581 message

[slender oasis]

that is normal for rectilinear infil, its not actually suposed to connect. grind infill does connect but rect alternates direction so each line is one above the last. that is why it provides almost no str to a part only support for the above layers.

but I think Little_Equinox is right, that looks like its might be printed a bit cold

you would want to do a temp calibration test to be sure.

[slate river]

I tried turning off the fan or turning on the heated Chambers for my elegoo centauri carbon in Orca, but no luck so far.

[mossy urchin]

ohh huh, maybe I've never actually used rectilinear, only stuff that looks like it 🤔

[mossy urchin]

I was talking about all fans - tho especially chamber should be off so the heat accumulates.
Part cooling fan made my prints warp like crazy

[slate river]

The first one is the one, that starts up again and thus dropping the chamber temp

[mossy urchin]

Yeah that would be part cooling.
You need to adjust the filament profile in the tab "cooling"

[mossy urchin]

So in the preview panel, where you select the filaments

[slender oasis]

my brain. going to 3d print it and put it in a jar with a lable "Abnormal Brain, Do Not Use!" on it (yes that is actually my brain taken from an MRI)

[slim sandal]

that movie was funny

[hoary siren]

That is actually so cool
Although your frontal lobe topmost right looks atrophied

Might be the reason why you have ||deez nuts||

[strange moss]

that's metal as hell 🤟

[mossy urchin]

Is that smooth part on the left considered healthy or just a scanning artifact?
Also: does it have interior? Would be lit if you put an easter egg inside xD

A little carve out where the amygdala / temporal lobe is with a funny guy and terminal inside

[slender oasis]

the smooth part is something I am trying to get rid of. the brain extraction algorithum I am using keeps leaving some of the dura on there. really annoying

[mossy urchin]

Ahhh... maybe there's a way to use different parameters on specific parts of the imaging?

[slender oasis]

none of the algorthiums I have tried have many options. I am not using the most ideal scan for this but its the only one I have in 3d. I could do it manually but there are 200 or so images I would have to outline

3d slice, the program that does this stuff is not very easy to use

[mossy urchin]

Is the data not just a point cloud with point-attributes like "density" or "alpha"?
Because it's kinda easy to filter based on that.
And those don't require any special software to parse so you can use some that support plugins or whatever

[slender oasis]

no, they are 2d image slices

https://cdn.discordapp.com/attachments/1132869184095780914/1507774029216354385/image.png?ex=6a15c27d&is=6a1470fd&hm=0e01347a328481bd5402dc94bb3787e087470b1ba1ccc4fe4d70abbe486f77fb&

[mossy urchin]

Uughhh I see...
but those could be converted to an easier to manipulate point cloud ^^

[slender oasis]

not really, that is the extracted image slices. this is of the entire head so there lots of other stuff in the original images

[slim sandal]

did you make the sculpt your self

it look very nice

[fresh plume]

Nah, I did the painting on the model and uploaded a new variation but its a model I found lol, I do engineering shapes not pretty ones

(Painting in the slicer to be clear theres no paint on it)

[frail hornet]

I have some experience working with 3D segmentation, if you're willing to share the files I can see if I could get a better extraction than 3d slicer can.

[slim sandal]

Same there i can draw in 3 view only and suffer when making something semi organic my minds eye looks like a cad program

[mossy urchin]

...ahh yes.. quality software that's worth having a legal case over (bambu)

[slender oasis]

would like to learn to do it my self, what program do you use?

[frail hornet]

In-house, written in python using opencv and pyvista.

[slender oasis]

the problem I am running into is I the part of the MRI that was actually done in 3d is really not ideal for extracting just the brain. I mean I had no control over how they did it, they were looking for a specific medical problem. because of the low contrast on the 3d set its been really annoying to get a clean extraction of the brain without some of the outer stuff being left on at the back making me look smooth brained

[frail hornet]

Yeah, I see that in the slicer view you showed. If you want to try your hand at editing it, I'd suggest starting with some edge enhancement techniques (e.g. unsharp mask) and then subpixel contour extraction - basically you can take the first 2 derivatives of the image (I use the optimal 7-tap filter design from here: https://farid.berkeley.edu/downloads/publications/ip04.pdf), then compute the determinant of the hessian matrix and compute a more exact location of the edge, see https://dl.acm.org/doi/abs/10.1109/34.659930 for some more detail

[slender oasis]

brain melts

[humble terrace]

I think smooth brained was required for enlistment. Or maybe that was just for the orange paint dip...

[tight river]

It's probably lead paint, causing you to become smooth brained

[viscid violet]

Did someone call for smooth brains?

[slender oasis]

well, more trying to unsmooth ma brain

[tight river]

This is the 3D print channel. We only know how to smooth stuff

[slender oasis]

but I want to turn off ironing on my brain!

[tight river]

That's active at all times and the tick box greyed out, sorry

[tight river]

https://youtu.be/iMAWa9vfxcE

The madlad actually did it!

He is also currently making a statement against Bambu's fuckery

https://www.youtube.com/live/oKiWl9vCUlo

It is printing nothing, but the z offset is raised by 1mm every hour

[hoary siren]

After a slight communication issue with my brother, I have now the STL files for 8 custom Kill Teams 💀

He wanted one, I wanted 2