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Elegoo Centauri 2 Review: The Best Budget CoreXY 3D Printer

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Elegoo Centauri 2 Review: The Best Budget CoreXY 3D Printer

For years, the CoreXY design was the domain of enthusiasts willing to drop a grand or more. Elegoo just flipped that script. The Centauri 2 is a fully enclosed, fast, and surprisingly polished CoreXY machine that costs less than half that. It’s the kind of printer that makes you wonder why you ever considered a bedslinger.

I’ve spent weeks with the Centauri 2, and it’s not just a good budget printer. It’s a genuinely great printer, period. Here’s why it’s the best budget CoreXY 3D printer you can buy right now.

What Makes the Centauri 2 Different

CoreXY printers move the print head on a belt-driven gantry system, which allows for faster, more precise movement than the traditional Cartesian design. That’s why they’re the standard for high-end machines. Elegoo brought that same architecture to the budget segment without cutting corners that matter.

The Centauri 2 ships fully assembled. No all-night build sessions, no bags of loose screws, no head-scratching over misaligned rails. You unbox it, plug it in, and run through a quick setup wizard. That alone is worth something. Most printers in this price range require hours of assembly and calibration before you get a single successful print.

It’s also enclosed, which is rare at this price. That enclosure keeps temperatures stable for materials like ABS and PETG, and it makes the printer quieter. It’s not silent, but it’s unobtrusive enough to run in a shared space.

Print Speed and Quality: The Real Test

Specs are one thing. Real-world results are another. The Centauri 2 claims a max speed of 500 mm/s, and while you won’t run it at that for most prints, it handles 200-250 mm/s with ease. That’s roughly three times faster than a typical budget printer.

I printed a Benchy in under 25 minutes at 0.2mm layer height, and the quality was impressive. Sharp corners, clean overhangs, and no visible layer lines at a glance. The 0.4mm nozzle handles detail work well, and the auto-bed leveling means you don’t have to fiddle with manual leveling every few prints.

For a budget CoreXY 3D printer, the Centauri 2 punches well above its weight. It’s not a high-end 3D printer, but it’s close enough that most hobbyists won’t notice the difference.

Build Volume and Features

The Centauri 2 offers a build volume of 220 x 220 x 220 mm, which is enough for most functional parts, cosplay props, and prototypes. It’s not massive, but it’s practical. The magnetic flexible build plate makes part removal a breeze — just flex it and pop your print off.

Other notable features include:

  • A 4.3-inch touchscreen interface that’s actually responsive, not a laggy afterthought
  • Wi-Fi connectivity with remote monitoring via the Elegoo app
  • Filament runout sensor and resume-print functionality
  • Dual Z-axis screws for improved stability

These aren’t just checkboxes. The touchscreen is a genuine upgrade over the clunky rotary knobs on older budget machines. The app works well enough for starting prints and checking progress, though I wouldn’t rely on it for heavy file management.

Software and Slicing Experience

The Centauri 2 works with Elegoo’s own slicer, which is based on OrcaSlicer. That’s a good thing — Orca is one of the best open-source slicers out there, and the Elegoo version is well-configured out of the box.

You can also use Cura or PrusaSlicer if you prefer, but the Elegoo profiles are tuned for the machine. I stuck with the default profiles and got great results without tweaking. For a printer aimed at beginners and intermediate users, that’s the right call. Nobody wants to spend hours dialing in retraction settings on day one.

If you’re new to 3D printing, this is a huge plus. You can focus on learning the craft, not fighting the machine.

Value and Verdict

The Elegoo Centauri 2 is priced around $450, which is remarkable for a CoreXY machine with this feature set. Comparable printers from Bambu Lab or Prusa cost $800 or more. That price difference isn’t justifiable for most hobbyists, especially when the Centauri 2 delivers 90% of the performance.

Are there compromises? Sure. The camera quality is mediocre, the build plate is slightly smaller than some rivals, and the enclosure isn’t perfectly airtight. But none of these issues affect the core experience. It prints fast, it prints clean, and it doesn’t break the bank.

If you’re in the market for a new printer and don’t want to spend a fortune, the Elegoo Centauri 2 is the best budget CoreXY 3D printer you can buy. It’s a no-brainer recommendation for beginners and a solid upgrade for anyone stuck on a slower, older machine.

For more options, check out our roundup of the best budget 3D printers or learn how to choose your first 3D printer.

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From Gems to Employees: How to Turn AI Tools Into Autonomous Workers

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The Weekend Is Almost Here: Don’t Miss This AI Roundup

Friday’s looming. You’ve got one foot out the door, but before you log off, there’s a batch of AI intel worth your attention. Save it for later if you must — just don’t skip it.

This week’s edition zeroes in on three areas that matter if you’re building a serious AI workflow: converting Google Gems and custom GPTs into reusable Skills, training autonomous AI employees that actually meet your standards, and the latest industry moves from Gemini and others.

What Are Gems and GPTs — and Why Convert Them?

You’ve probably tinkered with custom GPTs in ChatGPT or played with Gems in Gemini. They’re handy, sure. But they’re also siloed. A GPT lives inside ChatGPT; a Gem stays in Gemini. That’s fine for personal use, but it falls apart when you want a consistent process across your whole operation.

The fix? Turn them into Skills. A Skill is a packaged, reusable capability that any AI agent can call on — regardless of the underlying model. Think of it as the difference between hiring a freelancer who only works in one app and hiring someone who can plug into your entire tech stack.

This isn’t just a nice-to-have. If you’re serious about building autonomous AI employees, Skills are the building blocks. They let you standardize how your AI handles specific tasks, so you’re not reinventing the prompt wheel every Monday morning.

How the Conversion Works

  • Audit what you have: List every custom GPT and Gem you’ve created. Which ones actually save time?
  • Extract the core logic: Strip away the interface and isolate the instructions, knowledge files, and workflow steps.
  • Repackage as a Skill: Define clear inputs and outputs. A Skill should be callable by any agent, not tied to a chat window.

It sounds technical, but the payoff is real. Once your best prompts become Skills, they’re versionable, shareable, and — crucially — usable inside automated pipelines.

Training AI Employees That Match Your Standards

Here’s the uncomfortable truth: most people’s AI assistants are mediocre because they’re trained by accident, not by design. You let the model guess what “good” looks like. Then you’re surprised when the output is generic.

Training an autonomous AI employee is different. You’re not just writing a prompt — you’re onboarding someone. That means setting expectations, providing examples of excellent work, and establishing guardrails for when things go sideways.

Start with a single role. Pick one repetitive task — say, drafting client emails or summarizing industry reports. Build a Skill for it, then train the agent on your feedback loop. Show it what a 9-out-of-10 response looks like. Correct it when it drifts. Over time, it gets faster and sharper.

And here’s the key: it works while you sleep. That’s the whole point of autonomous. You set the standard, the AI meets it, and you’re not in the loop for every single output.

A Simple Training Framework

  1. Define the role: Write a one-paragraph job description for your AI employee.
  2. Give it a Skills stack: Assign the Skills it needs to do the job.
  3. Run a pilot: Test on low-stakes tasks first. Measure accuracy, not speed.
  4. Iterate: Feed corrections back into the Skill definitions.

Done right, you’ll have a workforce that scales without headcount. That’s not sci-fi — it’s just good process design.

Industry News: Gemini and the Wider AI Landscape

Meanwhile, the big players aren’t standing still. Gemini has been rolling out updates that blur the line between chatbot and coworker. New capabilities are pushing toward longer context windows, better tool use, and more reliable multi-step reasoning.

What does that mean for you? The gap between consumer AI and enterprise AI is shrinking. Tools that felt experimental six months ago are now production-ready. But that also means the bar for differentiation is higher. Anyone can chat with a bot. Few can deploy a fleet of autonomous AI employees that actually deliver.

The winners this year won’t be the ones with the fanciest models. They’ll be the ones who figured out how to turn AI into a repeatable, trainable workforce. That starts with Skills — and ends with results.

So before you head out for the weekend, ask yourself: are you still playing with AI, or are you actually putting it to work?

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Judge Hands X a Split Verdict in Trademark Fight With Twitter Rival Tweet.app

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Tweet.app trademark ruling

A Startup Built on Trademark Scraps

Most social media startups begin with a big idea. Operation Bluebird began with a legal loophole. The Virginia-based company, founded by two lawyers, launched with the explicit goal of picking up the trademarks Elon Musk discarded when he renamed Twitter to X. Its homepage doesn’t hide this. It says the company wants to go back and grab what Musk dropped when he “threw the bird away on his way out.”

That’s not your typical mission statement. But it might be a clever one.

On Wednesday, a federal court in Delaware delivered a split ruling in the trademark fight between X Corp. and Operation Bluebird. Judge Colm F. Connolly granted X’s request for a preliminary injunction on eight Twitter-related marks. That means the startup can’t call itself Twitter.now. The core “Twitter” name stays with X, at least for now.

But here’s the twist. The judge denied X’s motion regarding two other marks: the word “tweet” and the Twitter bird logo. He wrote that Operation Bluebird was “likely to succeed in proving both that X Corp. discontinued the bona fide use of the Tweet mark and Bird logo and that it intends not to resume the use of the marks.”

In plain English: X gave up on those words and images. The public kept using them, and now a rival can too.

The Lawyers Behind the ‘Tweet’ Revival

Operation Bluebird isn’t run by Silicon Valley dreamers. It’s led by Michael Peroff, an Illinois-based attorney, and Stephen Coates, who once worked as a trademark lawyer at Twitter. Their legal pedigree makes their claim of wanting to build a fresh social network feel a bit thin. The real prize here is likely the trademarks themselves, which carry value independent of any actual product.

Still, the startup is going through the motions. It has rebranded its website as Tweet.app and opened its doors to early testers. The company told TechCrunch that more than 172,000 people requested a handle before launch. That number probably reflects lingering public affection for the Twitter brand — a name the startup can no longer use.

There’s a catch, though. To reserve a handle and join, users must pay $20. That fee likely helps cover the mounting legal bills.

What the Judge Actually Decided

This ruling isn’t final. It’s a preliminary injunction, which means the court is weighing the likelihood of success on the merits. Judge Connolly sided with X on the eight marks tied directly to the Twitter name. He sided with Operation Bluebird on the Tweet mark and the bird logo.

The case will now proceed to a full trial to determine whether X retains any rights to the Twitter marks, given that the company now operates under the X banner in most places.

For now, the practical outcome is this:

  • X keeps exclusive rights to the “Twitter” name.
  • Operation Bluebird can use the word “tweet” and the bird logo.
  • The startup must rebrand away from Twitter.now.

A Question of Abandonment

The core legal question is whether X abandoned these marks through non-use. In trademark law, abandoning a mark means discontinuing its use with no intent to resume. Musk’s aggressive rebrand to X in 2023 left the word “tweet” and the bird logo in limbo. The company kept the Twitter handle on its own platform but stopped using the bird in most official capacities.

Coates, now president of Operation Bluebird, framed the ruling as a victory for the public. “They kept the word. They let go of the bird, and they let go of the tweet,” he wrote in an announcement shared via email with TechCrunch. “A tweet was never a corporation. It’s one person saying something. That word survived three years of a company trying to replace it, because the public declined to stop using it. We think that tells you who it belongs to.”

That’s a poetic argument. Whether it holds up in court remains to be seen.

What This Means for X and Its Rivals

For X, this ruling is a mixed bag. It protects the core Twitter trademark, which the company still uses in some contexts. But it opens the door for competitors to use the word “tweet” and the bird imagery — elements that remain culturally significant even if X has moved on.

For anyone tracking Elon Musk’s X rebrand and its legal fallout, this case is worth watching. It could set a precedent for how courts treat abandoned trademarks in the fast-moving world of social media. If X loses the full case, it might have to accept that the bird and the tweet belong to the public now.

The startup’s approach is unusual, but it’s not without precedent. Companies have long scooped up abandoned trademarks and repurposed them. The difference here is scale: Twitter’s marks are among the most recognized in internet history.

For now, Tweet.app lives. Twitter.now is dead. And the bird, it seems, has found a new perch.

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I finally found an easy way to make Windows remember exactly where every app window belongs

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Windows remember app positions

Every morning, the ritual repeats. Open the same half-dozen apps, then spend five minutes dragging, resizing, and nudging each window into its designated spot across two monitors. By lunch, something shifts—a notification steals focus, a window snaps to the wrong screen—and the carefully built layout crumbles. It’s maddening.

I’d tried every trick I knew. Windows built-in snap layouts help, but they only work one window at a time. Third-party tools exist, but most feel like overkill or cost money. Then I stumbled on a free utility hiding inside PowerToys: Workspaces. It’s the closest thing to a magic button I’ve found for Windows remember app positions—and it’s genuinely easy.

What is PowerToys Workspaces?

Workspaces is a relatively new addition to Microsoft’s PowerToys suite, which has been around for years as a grab-bag of productivity utilities. It lets you capture a snapshot of your current desktop layout—which apps are open, where they sit, their size, and even which monitor they’re on—and save it as a named workspace.

Later, with one click, you can relaunch all those apps and have them snap back into their exact positions. No dragging. No resizing. No remembering which browser profile goes on the left screen. It’s like a bookmark for your entire desktop.

Why I stopped using manual snap layouts

Windows Snap Layouts (the hover-over-the-maximize-button feature) is fine for a quick two-window split. But it fails when you need a precise arrangement across multiple monitors or want to restore a full set of apps after a reboot. Workspaces solves that because it handles the whole layout as one unit, not window by window.

How to set up Workspaces in PowerToys

Here’s the part that sold me: setup takes less than a minute. You don’t need to configure anything complicated—just capture what’s already on your screen.

  1. Install PowerToys from the Microsoft Store or GitHub if you haven’t already.
  2. Open PowerToys and select Workspaces from the left sidebar.
  3. Arrange your apps the way you want them on your monitor(s).
  4. Click Capture Workspace—PowerToys takes a snapshot of every open window’s position and size.
  5. Give your workspace a name, like “Work” or “Coding Setup.”
  6. That’s it. You can now launch that workspace anytime from the Workspaces editor or a shortcut.

One note: Workspaces works best with apps that support command-line launching or have standard window handles. Most everyday programs—browsers, editors, terminals, chat apps—work flawlessly. Occasionally, a stubborn app might not restore perfectly, but in my testing, that’s rare.

Restoring a layout with one click

Once you’ve saved a few workspaces, using them is even simpler. Open the Workspaces editor, hover over a saved layout, and hit the launch button. PowerToys opens all the apps and arranges them exactly as captured. You can also assign a keyboard shortcut to each workspace, which turns the whole process into a single keystroke.

I now have three saved workspaces: one for writing (browser, editor, notes app), one for development (terminal, IDE, preview window), and one for communication (email, Slack, calendar). Morning startup went from a five-minute chore to a ten-second flick of a key.

What makes this different from other layout tools

I’ve tested utilities like FancyZones (also part of PowerToys) and paid tools like DisplayFusion. FancyZones is excellent for creating custom snap regions, but it doesn’t launch apps or restore a full set. DisplayFusion does window management across monitors, but it costs money and has a steeper learning curve.

Workspaces hits a sweet spot. It’s free, it’s built into a tool you might already use, and it requires zero configuration for basic use. If you’re juggling multiple monitors or just tired of rearranging after every reboot, this is the easy way to make Windows remember app positions without buying anything or wrestling with scripts.

Tips for getting the most out of Workspaces

  • Capture after a clean setup: Close apps you don’t want in the layout before capturing, so you don’t freeze in a stray window.
  • Use separate workspaces for different tasks: Don’t try to cram everything into one layout. Save distinct setups for distinct modes of work.
  • Combine with FancyZones: If you want more granular control over snap regions, set up FancyZones first, then capture a workspace that uses those zones.
  • Test with your key apps: Some apps (like elevated admin tools) may not restore automatically. Test your core set to see if anything needs a manual nudge.

If you’re like me and you’ve spent months fighting your own desktop, give Workspaces a shot. It’s the rare productivity fix that actually sticks. And for more Windows productivity tips, check out our guide on customizing your taskbar for faster workflows or setting up a multi-monitor display like a pro.

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