FakinUpCountryDegen @ FakinUpCountryDegen @lemmy.world

Pro-sanity, pro-science, pro-intelligence, pro-morality

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2 yr. ago

Ah, shit... I guess my great, great, great, 100x great Martian grandkids will have to suffer leaked dickpics from ancient times.

It literally funded his entire defense and a chunk of his campaign. It was the single dumbest thing the libtard dropouts could have possibly done. ¯⁠\⁠_⁠(⁠ツ⁠)⁠_⁠/⁠¯

He surrendered in the same way you surrender your wallet and watch at the TSA checkpoint at the airport.

If you think "never surrender" has some implication beyond "fight the good fight, don't just plead guilty, lay down, and die like a liberal dog", your crippling neanderthal genes are showing.

Ah, yes. Another intellectually impartial post. lmfao

It's not possible to make liberal cesspools any worse, so... Things are looking up!

That's basically the game the elites want us to play.

The societal problems are so preposterous and button-click simple to solve for a government as powerful as ours, there's no other logical explanation.

They want our eyes off the ball. That much is clear.

Weird... And yet, ads from the world's biggest advertisers are still regularly shown to me on X...

...was the search actually misspelled that badly?

I've already said a dozen times: no shit Sherlock, this is absolutely unnecessary for this application.

It's also completely irrelevant to change up the environmental parameters when that is not a constraint set at the outset of this conversation.

I swear to God, it's like there's an entire subspecies of moron non-engineers who exist for the sole purpose of arguing where no argument exists.

Please make sure Form Labs, and the rest of the companies I have worked for, are aware of how wrong their engineers are.

I'm not sure what the obsession is with arguing against the list of objective facts I have provided - each argument peeling away into a deeper and more obvious lack of understanding...

Please feel free to run anything other than the recommended wavelength of UV light through a photoreactive polymer resin and let me know the dimensions of your resulting print. Remember to do it twice, so you can compare the results - the point of this discussion. Repeatable results, to 1 micron of accuracy.

(your repeatable result will be a measurement of thin air, as your print will not cure - but feel free to try, as I've said.)

Shocking narcissism, yet again.

You clearly have no intent to learn from your mistakes and pollute your entire argument with ad hominem and every other logical fallacy in the book - all wrapped up with a bow of dismissal of the original premise.

Oh, and by the way, light is both a particle and a wave. "light has a size" - indeed, the wave of light we aren't talking about has a size - called wavelength. Don't be afraid to use the most accurate terminology for your irrelevant responses! The wavelength has zero influence on the dimensions of the final product, as any wavelength more than a couple nm out of spec won't cure the resin at all, and there will be no object to measure. I think you know that and are just trying to win an argument by talking over the heads of the average readers on here - which doesn't help your case.

It's extremely likely you legitimately have a personality disorder, and are capable of much more if you clean up your act.

https://www.creality3dofficial.com/products/ld-002r-lcd-resin-3d-printer

Don't forget - it's not as simple as just buying the printer. You need the right resin, several iterations of test models, and the right modifications of the model to work within the constraints of the printer and material.

With the right tuning, you will be able to create parts which measure within 1 micron tolerance reliably. (don't forget to use an indicator and good reference blocks - you aren't going to measure microns with a caliper or micrometer)

Sigh.

Please stop being confused about the capabilities of modern SLA/DLP processes.

What is the diameter of A PHOTON? And don't forget to answer ignorantly, in a condescending i-know-more-than-my-betters tone. No, seriously - look it up. You clearly don't know.

How many blood cells wide is light? By all means - tell me what the particulate size of photocuring resin might be? Could it be....2 microns maximum even for the largest ceramic-infused resin slurry - with sub-micron particulate sizes easily available even from Amazon? Yes - far, far smaller than blood cells. This is why you can't let this shit get on your skin. It will literally traverse the blood-brain barrier. The fumes can get particles of this size into your bloodstream.

Well, what on earth can I do to get 1 micron accuracy from zero-width photons and 2-micron UV cured particles? Perhaps - design my model to be LITERALLY ANY SIZE that happens to be divisible by 2 on X, Y, and Z axes, then center it on the build plate?

Can you please get with the program, here? I've likely been doing this work longer than you've been alive. I'm not even supporting Elon's demand, which is almost certainly unnecessary for this application.

Bullshit.

You're changing the premise of the question.

Pick a temperature - design your model to be whatever you need it to be at that target temperature - just like every other engineer with 26 years of experience, such as myself.

(by the way, my UV resin printer is quite temperature stable.)

Seems like a reasonable next step!

The pixel alignment is a good place to start, but no 2 printers will produce an identical result at that level. That's why it's important to tune the model to the printer - not the other way around.

Can you get it on curves? Yes, certainly. For 3d printers, even the position you choose for the model within the build area makes a difference.

The question is really about executing the process of engineering in the correct order.

The most common mistake is to design the thing you want to build first. In reality, you start with what is essentially a sketch of what a functional end product looks like. Then, you buy/build tools/manufacturing equipment. Finally, you refine your sketch into a manufacturable product based on assessment of the most reliably repeatable results available from the actual machinery as it is installed.

Nope.

This is definitely true in terms of industrial production. (super cheap for "makers" - taking the hardware constraints into consideration with the design, of course).

The heaviest Tesla is around 2.5 tons...but that's beside the point.

The scale doesn't matter. In fact, taking a desktop process and industrializing it makes it more accurate and repeatable - especially in a large-item manufacturing setting.

The best argument against the 1 micron requirement is that it's unnecessary from a practical standpoint. I completely agree with that, for sure.

It depends on the model being printed.

1 micron is easy to achieve on the Z axis with almost any printer, using any 3d printing technology (FDM/SLP/SLA/etc).

In the X/Y axis, the vast majority of FDM printers are off the table for 1 micron - increasingly so as the Z height of the model increases, especially on bed-slingers like the Ender 3. The taller the model, the harder it is to maintain accuracy on X and Y.

In SLA/DLP printers, it's all about the motor, controller, and whatever shields excess light/beam diameter.

To answer your question directly: I have no trouble getting highly reliable micron accuracy in a $99 Creality Halot. The key is to understand your model in relation to the pixel density of the screen. Some calibration prints tell you where the steps are, describing the relationship between input and output - which will most certainly be different from printer to printer at the consumer level. Once you have that data, some simple math tells you exactly how to design your object in a way that takes these natural constraints into consideration.

Yes - at any scale, even at the size of a car...or a battleship. When you accept the constraints of the hardware into the design of the object being produced, you can get micron repeatability out of just about anything.

Ok, and once that's done with the high level of repeatability and quality I've done it a thousand times, then what?