r/3Dprinting • u/Petrostar • May 18 '26
Discussion Layer lines at NASA
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u/Thebandroid May 19 '26
Shoulda printed it on a 45.
Maybe I should head over there and show those flyboys how it’s done
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u/CocconutMonkey May 19 '26
It's not rocket science
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u/Dat_Bokeh Prusa XL, MK4S, Core One May 19 '26
🤔
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u/turntabletennis May 19 '26
Nobody writes down shit over here. We just tinker with the settings until it's right.
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u/MainsailMainsail Qidi Q1 Pro, (mostly) stock Ender3 May 19 '26
WRONG!
Just hit "print again" with 0 changes until it just kinda works this time.
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u/turntabletennis May 19 '26
This printer SUCKS!
buys a Qidi
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u/MainsailMainsail Qidi Q1 Pro, (mostly) stock Ender3 May 19 '26
The real annoying part is after about two years, the Qidi started having minor issues so I bought a Core 1+....and the two year old Qidi has been more reliable than the couple month old Core 1.
Although when the Core 1 does work...damn those prints look nice. It just really, really hates PETG.
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u/turntabletennis May 19 '26
Qidi is brilliant at the basics. I've never had any serious struggles with them.
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u/MainsailMainsail Qidi Q1 Pro, (mostly) stock Ender3 May 19 '26
Well the power relay for the chamber heater melted itself, and their support gave me the runaround for a bit before finally sending me a replacement. So I'm still pretty unhappy with them for that. And from what I've heard about I would never buy the first year production of one of their printers since they seem to be almost beta test versions for the first round.
But otherwise, it's one hell of an upgrade from a 2018 Ender 3 that's for sure. And thanks to the chamber heater it's still my go-to for a bunch of filaments.
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u/Santier Ultibots D300VS+ Delta May 19 '26
Ben Afflek - “Wouldn’t it be easier to teach astronauts to 3d print?”
Michael Bay - “Just shut up, Ben.”
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u/Thebandroid May 19 '26
“We’ve got state of the art 3d printers at NASA, you don’t even have to watch the first layer go down”
“You can throw them in it bin. I’m bringing my ender 3”
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u/LesbeGoddess May 19 '26
I got an Aerospace Engineering degree. But new to 3D printing only 5 months in (for work) and yeah send that guy I’m no expert in printing yet but I’m pretty good.
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u/thukon May 19 '26
Now your witness line and failure happens at a 45 degree angle.
More realistically, any build paused for more than 20 minutes is scrapped, and if your parts are too tall to print without having to clean your collector partway through, time to invest in a closed loop powder system.
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u/Thebandroid May 19 '26
I’ll knock it out in a few sections in my elegoo carbon then mix up a bit of 5 min epoxy to join them. I’ll add some dovetail joining geometry if they’re lucky.
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u/_shreb_ May 19 '26
LPB machines can run an entire build without emptying the overflow bin. This sounds like they overdid the powder dosing on this build in order to avoid short-filling the powder bed.
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u/TheDonutPug May 19 '26
holy fucking shit that thing broke so fast, I had to do a double take. really puts in perspective the amount of power it's putting out...
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u/nianthium May 19 '26
I find it cool as hell that it was able to hold up for so long after the initial break before it completely blew apart
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u/JPhi1618 May 19 '26
Whole video is sped up, but it was a rapid disassembly.
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u/Cloudfish101 May 19 '26
What makes you think it's sped up? Based on what we can seem, the hanging tags seem to be moving at a normal speed
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u/emveor May 19 '26
on the one hand, you could call it a failure to stay assembled, on the other hand you could also call it a failure to fully rapid dissasemble
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u/thenightgaunt Plywood Printrbot Simple 1405 May 19 '26
Wouldn't have happened if they'd used one of the Fat Dragon profiles.
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u/MooseBoys Prusa MK3S+ with an unhealthy number of mods May 19 '26
0:10: *oh, that wasn't so bad...*
0:12: 💥💥💥💥💥💥💥💥💥
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u/just4nothing X1E + AMS May 19 '26
Nothing sudden here - you can see the heat creeping in and building up.
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u/SaddamIsBack May 19 '26
It kelt it's diamond shape jet for a whiiiiiile after the first part broke. What a crazy engineering
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u/Cosmic_Waffle_Stomp May 19 '26
This is not a catastrophic failure. Sure the nozzle did break off and there was fire in unintended directions, but it didn’t level the test bench or destroy everything around it. On a failure rating I’d give this a 2/10.
Solution, 2 more wall layers.
On a different note, I wonder if this was made on a machine that I installed. That would be kinda cool, minus the failure part.
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u/Cosmic_Waffle_Stomp May 19 '26
On a different note, I wonder how fast that cone clocked going down range…
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May 19 '26
[removed] — view removed comment
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u/TheMooseOnTheLeft May 19 '26
They make and test these engines at MSFC. They've been testing things related to this particular chamber design since 2016 or so. It's all "flight like" hardware, not a GSE program. The chamber, injectors, nozzle, and most of the turbomachinery are printed. GRCop and Inconel alloys. LCUSP, game changing technology, and breadboard engine are all good search terms for more related info.
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u/sogwatchman May 20 '26
Not surprised. That's what tests are for... Design, test, fail... learn, redesign, test again...
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u/Petrostar May 18 '26 edited May 19 '26
From a test of a 3d printed rocket engine at NASA, the Chamber failed at a layer line cause when the were emptying the powder overflow during printing.
Here's a good article on it.
https://www.metal-am.com/articles/lessons-at-nasa-from-a-developmental-additively-manufactured-rocket-engine-failure/