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100.2.133.74
I'd like to use it to make audio parts and models, like airplanes.
Follow Ups:
Sorry late reply but I was waiting to hear back from my son that has the large 3D printer from Bambu that includes remote video monitoring.
He said...
"Yeah, I have a Bambu, they're really easy to use and are user friendly. There are a bunch of good options though. The more important thing, in my opinion at least, is to go with a brand with a local store that can service them. Having the option to get repairs without having to pack it up and ship it is a huge benefit. Being able to get filaments and parts locally is fantastic too."
Jonesy
"I know just enough to get into trouble. But not enough to get out of it."
Edits: 05/16/25
Probably take a long time to print.
Printing the engine might be tricky, too -- come to think of it.
And then there would be the munitions...
all the best,
mrh
without a pilot it would be completely useless.
"Once this was all Black Plasma and Imagination" -Michael McClure
I am very interested in jet engine. When I visited DC, I stayed in the museum for a very long time and tried to figure out how a jet engine works. I couldn't figure out why it only pushes backward but not pushes forward.When I was very young, I made a jet engine using alcohol. But it exploded.
Edits: 05/12/25
I always thought they were interesting too,
I wondered the same thing, it kind of bothered me.
The answer was interesting i thought as it has to do with viscosity of the hot gas being much "thinner" and so, able to escape at a much higher speed.
In fact the exhaust can be "supersonic" because the speed of sound goes up with temperature also (i think it was about 230C where the speed has doubled) and this is how a jet can be supersonic too, the air getting out of it's way is compressed and hot and can then flow around the nose and wing edges at supersonic speed. Fwiw the visible cone you see going supersonic is the negative pressure wave, the positive pressure wave is first and is invisible and does not condense water vapor because it's hot.
The force out the back is a product of the mass flow and velocity but it's the velocity raised to something power, maybe squared or cubed don't remember, would have to google it.
Anyway, the same weight of air going in comes out much faster because its hot and so pushes, what a nice warm fire and happy noise.
Intake and Compression: The engine sucks in air at the front and compresses it. This requires energy input from the engine's turbines.
Combustion: Fuel is mixed with the compressed air and ignited in a combustion chamber. This process significantly increases the temperature and pressure of the gases.
Expansion and Exhaust: These hot, high-pressure gases then expand rapidly. The engine is designed with a narrower opening at the rear (the nozzle) compared to the front intake. This constriction forces the expanding gases to accelerate dramatically out the back.
Think of it like squeezing a balloon - the air rushes out the opening you create. In the jet engine, the nozzle acts as that opening.
Why not the front?
While there might not be a physical barrier blocking the front in a static museum display, the entire design of the engine is engineered to direct the flow rearward:
Turbine Blades: Behind the combustion chamber are turbine blades. These are specifically shaped to extract energy from the rapidly expanding gases, causing the turbines (and the compressor at the front) to spin. The angle and curvature of these blades are crucial for directing the airflow towards the rear.
Converging Nozzle: The narrowing shape of the rear nozzle is key to accelerating the exhaust gases. This acceleration is what generates thrust in the opposite direction, propelling the aircraft forward. If the gases were to exit freely from the front, this acceleration and the resulting thrust would be significantly reduced or non-existent.
So, while it might appear open at both ends in a non-operational engine, the internal components and the overall aerodynamic design are what dictate the direction of the powerful exhaust flow. The engine is meticulously designed to harness the energy of the combustion process and direct it rearward to create thrust.
Good description!
My point was the unexpected effect the heat has on the gas viscosity.
It is the viscosity that is tied to air sound velocity, if you had a box with a hole in it and the inside had 1 atmosphere over ambient, putting a hole in the box, the max air speed out of the hole is the speed of sound.
If the air were heated to around 230C, the speed of sound has already doubled and so is the velocity of the air exiting the hole at a give presure.
BUT the kinetic reaction from that is like with a bullet where the energy it carries is what 4 times greater if traveling twice the speed and like felt recoil, the plane is pushed by that..
Might be fun someday, google "turbo charged burn barrel"
Nt
... although, in the final analysis, all 3D printers integrate the time dimension as well.
all the best,
mrh
You bet! anything big takes hours!
I can spew bullshit, too.
Your interest may vary but the results will be same. (Byrd 2020)
I can't compete with the dead. (Buck W. 2010)
Cowards can't be heroes. (Byrd 2017)
Why don't catfish have kittens? (Moe Howard 1937)
Hi
YES!! or maybe it depends.
3D printers have made incredible advances in the last few years and the liquid resin printers are amazing. And there are places like "Thingaverse" that have tons of models to download.
I make horn throat parts and lenses for horns and probably shouldn't show that stuff but there are other fun things to print.
My daughter does most of my Solidworks drawing, programs the cnc router and runs the printers. IF you can draw it in 3d, you can print it.
Here is a sample of a fun thing i asked her to print when there was resin left over.
This is about 11 inches long, printed as one object and the printer even printed the springs! The next one will be made from the separate parts and assembled.
A Buckeye ball bearing heavy truck as used on some coal tenders and depressed center flat cars.
Tom Danley
Danley Sound Labs
I was unaware that that level of complex detail was available to more than just $$$$$$ printers. And the hex nuts are equally detailed
Could you please recommend a brand? I don't want Chinese junk. It will be better if they are made in other country like in India.Beside making audio part, I also like airplane models especially fight jet.
Edits: 05/10/25
Hi
I would be both of ours are from China although that may not be correct.
I have these at my shop but they are looking at one made by form-labs at work that is about 3 times faster than ours but much more expensive too.To be clear, there are two main approaches, the extrusion printers are cheaper and work by having a spool of plastic that is extruded and applied at about the diameter of a hair, and the x,y z motion builds up the object. We started with those BUT if one wanted a solid object like a horn, they take forever. Instead those objects generally have a hollow interior or one filled with supports. Speed is directly tied to the volume of plastic you print.
The resin printers can print a solid block at about the same rate at a small object, here is the fixed height per hour they can print. For anything big, these are WAY faster but still, an object that is say 10 inches tall, might take 15-25 hours to print. That railroad bogie (as in Europe) took about 5 hours and is printed as solids if the object was solid.
These work by having UV lights that shine up through an LCD screen into a vat of goo sitting on it, that has a clear plastic bottom. The UV light triggers a VERY thin layer of to turn solid. The LCD screen only lets light through where it was supposed to print. Then at about 1/3 mm per set it grows the object on the bottom of a metal plate which slowly lifts out of the goo.
The two resin printers we use in the lab are an Elegoo Saturn and the one mostly used (and printed that truck) is the Sonic Mega 8K-S. There is a new version of that one that is supposed to be twice as fast but more than twice the coins.
There are two more steps to resin printing too, first you have to wash the goo of the part (usually with rubbing alcohol, some resins use water)
and then curing with UV light. We use the curing box that came with the Elegoo and with that one, it takes 5 min to finish the cure.Hope that helps.
There is an amazing amount of printable 3d cad models out there, HIGHLY likely you can find cool fighter plane stuff.
Look for files that end with .stl
Have fun!Tom
Edits: 05/10/25
India is not a must but a nice to have requirement. Thanks a lot for the recommendation. I will do my research. At this point I am 100% sure I want a 3D printer. I like fight jet models.
I looked up the price of the one Tom used. It's about $1300 at Amazon .
I am willing to invest tools. Man likes tools. Is it made in India or a Chinese junk? Is it waterproof and bulletproof?
Tom has already indicated his is made in China. As for the other questions, ask Amazon or him!
It would seem you spend a lot of money on little parts. :)
Well i would bet it's from China, i didn't look to make sure.
The thing is if you want or need to make something (like say a phase plug idea for a compression driver), there is no way i could fabricate one.
But, if i can get my daughter to draw it in Solidworks, it can be exported to the printer and in a few hours you have one.
An amazing part of this approach is one can print interlocking parts like gears within a mechanism and the parts are free to move, an assembly that you can assemble from parts. Had the model for the rail car truck had a gap between the separate parts and brakes not applied, the wheels and suspension would move.
Google a sight called Thingaverse and look for anything you think of.
I am pretty sure one of the main things these are used for is printing miniature but precise figures for board games. A large printer can print an entire set of those or more in one session.
In some cases, it makes sense beyond prototypes for short run production to print parts vs molding them.
how useful it would be at Danley Labs for prototyping. I had a customer who used one for small manufacturing runs of proprietary parts. Not so sure as to the cost effectiveness of spending that much money for printing otherwise readily available stuff.
First couple of pages at Thingaverse seem more like novelty items but I can see the potential value.
My wife said I have too many tools and never use them. She also said I have too many speakers :)
one who enjoys multiple systems around the manse.
Music system upstairs, HT in family room (where wifey spends lots of time) and system in garage. In ceiling speakers found in multiple rooms and out by pool.
Everything in use. :)
It is nice to have pool at home. I had one but here the weather is too cold and not much use. So I removed it. Now I go to our middle school to swim with my wife. They have an in door Olympic pool. We can swim all year round.
I live in the mid south so we get a good six months or so of use each year. It's about time to open.
Nothing better to cool off after a long run or mowing the 1.6 acre lot. :)
I used to live in Dallas on a business relocation for about one year. The weather there is definite warm.
How about a home
Gsquared
Very Cool!
Hey this is exactly how the extrusion printers work too.
Imagine the poo of cement was melted plastic about the diameter of a hair or a little more. The mechanism moves the heater / extruder head the same way.
Gather the cost of parts you've purchased over the past three years or so and compare that to the cost of a printer capable of replicating them. Add some opportunity cost to the equation.
Definitely not for me. :)
Some parts are very expensive and hard to get.
I have seen someone used 3D printer to make speakers.
Edits: 05/10/25 05/10/25 05/16/25
do the calculation as suggested and determine the answer. :)
If it were all about economic calculations and opportunity cost we wouldn't own many of the conveniences and pleasures in life. Maybe he just wants to play around with a 3D printer. I've thought about it but in my case I'd probably lose interest pretty quick.
such was not a part of OP.While it's nice to be able to afford most anything I want, I find myself not wanting to add short term "toys" as you mentioned.
After a recent stay with a cousin'who I grew up with, I'm getting a silencer for my rifles - and maybe a new Q gun. I had a great time with he and his wife with an existing pastime that makes it more enjoyable. :)
Edits: 05/10/25
Is there a way to zero red dot w/o shooting?
there are "bore sights" which look like cartridges that project an LED beam through the barrel in lieu of punching paper.
My cousin also has a "smart" red dot that can adjust itself once you provide ammo information. It automatically adjusts the reticle!
My only red dot experience was shooting a friend's Glock 19 with a red dot sight. Pretty cool for plinking and paper target shooting but my personal preference is for simplicity with the most basic factory sites on my pistols. The red dot site was almost like "cheating" ;-)I have nearly zero experience with rifles but I was truly amazed shooting a friend's hunting rifle at an outdoor range that he used for adjusting his sites before hunting season. I can't tell you what rifle it was but even I was able to bulls-eye a target from 100 yards looking through the scope. I think it was .30-06 but not sure. Yeah, I know.... that's not far but it still amazed me!
Edits: 05/10/25
designed from the outset to be suppressed, uses a new cartridge called the 8.6 Blackout, weighs about five pounds, delivers 1 MOA accuracy to 300 yards subsonic and can take down virtually any African game. That's the Q Boombox .We're going far afield of original topic but you might search YouTube for videos. My cousin has a 300 Blackout version called the Sugar Weasel. They are hand built by a small company to the most rigorous and precise standards for an incredible feel and performance. It has a more refined and proprietary brother called the Honey Badger. I want one or the other of the last two. Its designers were involved in the development of the ammunition and do work for SOCOM.
Edits: 05/10/25 05/11/25
NT
Edits: 05/18/25
NT
Edits: 05/18/25
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