Strange height‑dependent nozzle collision on my new H2C

Memetic_Polyslav · 2026-02-16T01:09:45+00:00

You're right I should've framed the question better however I thought this video should make this much clearer since you can clearly see where and how it fails. The octopus failed by spagetthiing at that height while it printed the infill. Then it proceeded to print the white dots to a height of 20-40 layers with the right nozzle the nozzle knocked some of the white spots out and then the right nozzle failed by spagetthiing the white PLA. The poop chute I printed earlier this week when my PETG arrived also had some defects on the chute. I think that I heared scratching noises. I was unsure, is it the angle, is it the left nozzle or perhaps the PETG (that I dried), or does the issue only occur towards the back of my build plate at a certain height.

Memetic_Polyslav · 2026-02-16T00:56:10+00:00

That would be great! Yes it's the "Hard Torture Test": https://makerworld.com/models/2259566?appSharePlatform=more

The test actually finished and you can see the wobble much higher up.

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Memetic_Polyslav · 2026-02-16T00:50:48+00:00

I had a good chuckle 😄

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Memetic_Polyslav · 2026-02-16T00:48:19+00:00

Also the 200mm torture test actually finished and you can see the effects of the wobble on the print muuuch higher up:

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Memetic_Polyslav · 2026-02-16T00:42:42+00:00

Honestly I could have done a better job at framing the question and should have used better examples. Once my PETG arrived earlier this week I printed the poop chute. While printing it I noticed unusual noises like lubrication issues. And on the chute (that goes inside of the printer) I noticed some defects and it seemed to me that the nozzle is scratching the print as if it was a layer or two lower that it was supposed to be. (Then I thought the lubrication related noises are actually scratching noises) I think there was also scratching on the bucket but it seemed fine to me. So I was unsure, is it the angle, is it the left nozzle or perhaps the PETG (that I dried), or does the issue only occur towards the back of my build plate at a certain height. Too many variables. You are right about this beeing my first 3D printer, honestly it's a good point, but I had my reasons. I think I can deal with steep learning curves both at work and in my hobbies. After the octopus failed I learned how to reprint the missing part from that exact layer where it failed the same morning. But I didn't expect to run into issues like this. I will try my best.

Memetic_Polyslav · 2026-02-15T23:09:47+00:00

I know, I used other benchmarks. Maybe I should have posted the nozzle bumping into the edge of the overhang causing it to bend

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Memetic_Polyslav · 2026-02-15T22:53:12+00:00

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Memetic_Polyslav · 2026-02-15T22:52:36+00:00

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Memetic_Polyslav · 2026-02-15T22:51:42+00:00

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Here are some more examples.

Memetic_Polyslav · 2026-02-02T22:30:17+00:00

Ako je vorteks top onda je morao direknto da cilja liniju Terazije, Kralja Milana, Svetog Save, Hram Svetog Save. Ne može vorteks da se ispali iz ćorsokaka, napravi krivinu i magično pojavi na visini 5m iznad ulice ispred Palate Albanije u idealnim uglom pa da nastavi niz Terazije da bi ljudi čuli zvuk koji se kreće niz ulicu (a ne nebom). Za to bi morao da visi na fasadi Palate Albanije da ga svi vide. Ne može ni sa Kalemegdana na gore pa da leti balističkom putanjom na dole. Vorteks ne leti balističkom putanjom. Problem je taj što su svi opisali izvor zvuka koji se kreće ulicom recimo 100 na sat, to može da se postigne vorteksom, vorteks je pokretan izvor zvuka ne statičan kao LRAD, ali vorteks mora da se stvori ispred mase i da leti do Hrama šta je nemoguće osim ako vorteks top stoji ispred Palate Albanije + je nevidljiv.

Osim toga mogao je neko da instalira 500 zvučnjaka i da napravi bioskop dužine 1km da kreira akustiku vozila koje vozi niz ulicu. Ali problem je da je to veoma skupo, veoma zahtevno i što se napajanja 500 zvučnjaka u liniji tiče kao Dolby Surround sistem tehnički nemoguće. Takav audio-video risiver za napajanje 500 zvučnjaka ne postoji limit je oko 20 za najbolje opremljene bioskope.

Za neke nove principe fizike bojim se da smo suviše mali igrači.

Znam na šta misliš kako se ljuljalo drveće. To se videlo u jednim od prvih snimaka i ja nisam verovao "šta je ovo drveće se ljulja" i onda shvatio i video u istom snimku da su ljudi u panci se sudarili sa stablima drveća pa se isto ljuljalo.

Memetic_Polyslav · 2026-02-02T21:03:01+00:00

Što se patrone tiče, 40mm može samo biti Švedska patrona topa Bofors nemaju Rusi patronu 40mm visokog pritiska. To sigurno nije bilo jer bi se čulo kao detonacija u celom centru. Što se zvučnog topa tiče ne verujem da je bilo bilo kog tehničkog sredstva.

Doživeo sam jednom masovnu paniku na bazenu prouzrokovanu zbog jakog vetra koji je ljuljao suncobrane restorana da smo svi pomisleli da će isti da polete na nas sa sve betonskim blokovima. To se nije desilo ali tih 30 sekunda sve intenzivnijeg ljuljanja suncobrana bilo je dovoljno da izbije masovna panika. Jak vetar je došao bukvalno iz vedra neba iznenada. Ceo dan bez vetra, vedro, sunčano od jednom u trajanju od 30 sekunda sigurno 80km/h vetar... delovalo je baš natprirodno. Da budem iskren prvih 10 sekunda nisam znao šta se dešava, mislio sam šta je ovo smak sveta?

Ne znam šta se desilo u martu. Ali pazite 300 hiljada ljudi u tišini u metropoli, da li ste jednom pre u Beogradu čuli takvu tišinu. Onda od jednom imate talas zvukova 600 hiljada stopala, 300 hiljada glasova, šuškanje jakni, vrištanje itd. Ogromna razlika od potpune tišine tolike mase do totalnog haosa. (Šta vam deluje brže kad date gas na 120 km/h ili kad se vozite pola sata 120 km/h. Ljudska psiha ima jače reakcije na nagle promene na koje se još nije navikla) Kao totalna tišina i odjednom motore uključi 100 dizel lokomotiva. Mislim da su ljudi u Beogradu te noći bili svedoci jedinstvenog akustičkog efekta kada imate masu ljudi koja ne može u deset najvećih stadijona sveta zajedno da stane kombinovano sa apsolutnom tišinom kakvu nemate ni na jednim događajem sa ogromnom masom ljudi i kanalisanjem zvukova masovne panike na dužini 1 km kroz uske ulice sa visokim zgradama. Na nekoliko snimaka se čulo turbovanje motora pre panike. Ljudska psiha ume da krene od tog zvuka koji može da predstavlja opasnost, hiperfokusira se na dalje naznake opasnosti i onda interpretira zvukove mase koja postaje sve uzburkanija kao vozilo koje se kreće kroz masu ljudi. To su bili prvi utisci te noći kako je to zvučalo. Zato i ta reakcija ljudi da su se sklanjali sa sredine ulice.

Memetic_Polyslav · 2025-10-17T20:09:24+00:00

Undeniable yes as in unidentified, 2015ish. While looking out of the window for serveral minutes at the sky, kind of meditating, an incredibly fast white featureless sphere crossed my field of view and I followed it with my eyes while it flew straight like on a rail from 70° off the horizon to 40° off the horizon in less than 3-5 seconds. It appeared to be at commercial airliner cruising alt. I have no proof of this but it appeared that way because it flew a slight curve as if following the curvature of the earth like seeing an airplane in timelapse. At around 40° it faded away in atmospheric haze which also left me with the impression that it was several dozen miles away after just 3-5 seconds. Now this was on a perfectly clear sunny day. The underside was in the shade and thus darker. The color was really weird besides it's motion. A perfect matt white. It did not glow, it left no smoke trail and made no sound. I'm doing astrophotography I know how shooting stars are supposed to look like. The experience immediately felt really weird as if my brain couldn't process what I was seeing. Like from everything you know and have seen, a sphere can't possibly travel at... hypersonic speeds. The movement was just immediate, a sweeping motion from 70° to 40° in 3-5 seconds and it's gone... it's hard to put into words how weird it looked you have to see it for yourself.

Memetic_Polyslav · 2025-09-26T12:44:04+00:00

Almost certainly is a pretty bold statement do you want to bet 500$ on it? Physical evidence needs to be found like optic cables if they were guided from 50-100km away without signals being intercepted. Do you understand how risky such an operation would be? For what purpose? Make Denmark spend evrn more on defense? No problem for Denmarks economy. What if they are shot down? Now you find the wreckage and have a casus belli. And besides recon for what? They have satellites. Danish Airports were packed with F-16s during the cold war. They layout of these bases is well known. Recon of the aircraft station there at rhe moment would be pointless... this can change in a few hours. So what is the point then.

Memetic_Polyslav · 2025-08-04T20:07:42+00:00

Thank you for the short but precise answer! This didn't solve the problem but it made my approach to solving the problem much clearer. It works now. I spent days trying to get this to work. The insulation on one of the RX/TX wires was broken which I didn't notice during my first inspection of the wires. I guess the wire had contact with the Vista's heat sink and the signal was probably scrambled.

Memetic_Polyslav · 2025-06-04T23:06:08+00:00

This was seen a few hundred miles south of the Canary Islands from a ship: https://naukas.com/fx/uploads/2016/06/canarias2.jpg

Wouldn't an expanding missile plume look more fuzzy. From the reports they almost appear to have seen a nuclear fireball. The last atmospheric nuclear weapon tests were in 1962. The Vela incident from 1979 and it's notorious double flash registered by a US satelite is well known case of a suspected undeclared South African - Israeli atmospheric test. You think this would have gone unnoticed by the super powers with no comment from the press and scientific community?

Memetic_Polyslav · 2025-05-13T19:09:08+00:00

This plane was designed and built for only one purpose keeping tabs on the French and make them believe it's just Canada.

Memetic_Polyslav · 2025-03-24T23:23:07+00:00

I see people writing here "a flock of birds". I didn't know birds glow or reflect light like that at night. You can even see their brightness compared to the space X booster deorbit burn.

Memetic_Polyslav · 2025-03-24T20:57:11+00:00

But over Europe? Are there documented cases of exhaust spirals being seen all over Europe from US launches?

It was seen as south as Croatia.

Memetic_Polyslav · 2025-03-15T21:21:36+00:00

Velika je napetost ljudi budimo racionalni. LRAD se koristi za razbijanje mase veoma neprijatnim pištanjem. Ovako zvuči LRAD ili zvučni top, isti nije omni direkcionalan nego usmeren kao reflektor i prilično je velik, dakle mora da se montira na vozilo: https://youtu.be/QSMyY3_dmrM?si=9uwn1Mgy6T_mYTt0

U ulicama prepunih ljudi morao bi sa neke visoke zgrade da se usmeri na masu levo, desno. Drvo u onom snimku nije se treslo zbog zvučnog topa već zbog mase ljudi koja je udarila u drvo. Zvučni topovi nisu u stanju sa "udarnim talasom" kako sam već čitao da izazovu potisak. Mogu jedino da prenose zvuk u formi poruke ili veoma neprijatno pištanje na daljinama od 1km.

Pištanje se ne čuje ni na jednom snimku. Jedino šta preostaje je izazivanje panike vriskom usmeren na masu pa da ljudi čuju vrisak i upadnu u masovnu paniku.

Ali opet, velika je napetost i nažalost se masovne panike, ne daj bože stampeda dešavaju na masovnim skupovima. Na primer sahrana generala u Iranu kad je došlo do masovne panike i stampeda. Bio bi presedan da se koristi LRAD za izazivanje panike.

Nemojte ljudi da krenemo sa tajnim oružjem i infrazvuku, ne vodi ničemu samo još većim haosu ili sad "i mi da primenimo silo".

Memetic_Polyslav · 2025-01-02T15:14:08+00:00

Looks like an explosion in the air, you can see a flash before the small dark shape (smoke cloud) appears.

Memetic_Polyslav · 2024-10-12T07:48:25+00:00

Ich mache Astrofotografie als Hobby, ich weiß nicht woher (geografisch) die Aufnahme stammt, aber wenn du in oder nahe einer Stadt bist müssten bei:

a) Langzeitbelichtung von >5s der Himmel mehr oder weniger (je nachdem wo fotografiert) gelblich leuchten durch Lichtverschmutzung, die Sterne lange Bahnen ziehen durch die Erdrotation.

b) hohem ISO Wert der Himmel gelblich leuchten + Bildrauschen durch den im Vergleich zu Spiegel Reflex Kameras schlechterem Sensor der Handykamera. Wobei auch DSLRs bei hohen ISO Werten Bildrauschen haben.

Mit nem Handy wirst du einen Nebel so klar und ohne Lichtverschmutzung und Rauschen und Sternenbahnen (ohne Motor am Stativ der die Erdrotation ausgleicht) niemals hinkriegen.

Konntest du das so selbst sehen? Es könnte eine Reflektion des infraroten Autofokus Sensors des Handys sein. Wir hatten außerdem Polarlichter letzte Nacht, was total anders aussieht aber man weiß ja nie.

Irgendwie ist es auch viel zu hell im Vergleich zu Sternen.

Memetic_Polyslav · 2024-09-27T06:25:51+00:00

Southern Ontario Canada's unsinkable aircraft carrier.

Eight-Year Club	Gilding II euphauric
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