For new and seasoned makers

Every failed print has one cause. Find it on the first try.

Engage The Beast 3D reads your symptoms, your photos and the G-code itself, then tells you the single most likely cause and one fix at a time. Settings come from your filament maker's own profile and are checked against your printer. Need a part? Describe it and print it. Hands full? Just talk to it.

Free plan, no card needed. 424 printers and 961 filaments built in. CAD is included in every plan.

CheckFlow ratio is 0.98. Foaming ASA needs about 0.42–0.70. This alone explains the welded first layer, the blobs and the rough top.
CheckHand-added slowdown M220 S50 at layer 488. The failure started before it, so it isn't the cause.
One workbench, every tool

From "why did that fail?" to a part that fits.

Failure Finder

Pick what you see, add photos, drop in the G-code or 3MF project. It reads the file for what your printer was actually told to do: temperatures, fan spikes, flow, hand-added overrides. Then it finds the one cause behind all of it.

"Corners lift and it goes soft at layer 488"

Settings you can trust

Pick your filament by brand: numbers come from the maker's own slicer profile, for 961 filaments from 64 brands. Before any AI is involved it checks your hotend, bed, enclosure, nozzle and dryer. Export the result straight into OrcaSlicer, Bambu Studio or PrusaSlicer.

PPA-CF on a 0.4 mm brass nozzle → Stop

CAD Studio

Describe the part, its measurements and what it attaches to. It builds a solid model, sets it on your bed and checks it fits. Change it in plain English or edit any number, then download the STL.

"Clip for a 25 mm pipe, two #8 screw holes"

Talk to it

Every box has a microphone. Turn on Talk mode and have a real back-and-forth while your hands are busy at the printer. Answers can be read aloud.

"Hey, why is my PETG stringing?"

Fit Check

Print one small test piece, measure it, and get the exact hole and contour compensation for your slicer. Holes and pegs come out the size you drew them.

Hole 9.62 mm → hole compensation +0.19 mm

For the first week, and every week after

A first-week path for new owners, a "what should I print it in?" chooser, a failure library, spool drying reminders, print cost from every file, multiple printers, and a journal that remembers what fixed things last time.

"Your PETG was last dried 12 days ago"

Why not just ask a chatbot?

Because a chatbot will give you four different bed temperatures for the same spool.

Ranges, not guesses

Settings are anchored to published filament ranges and your spool label. The AI can't wander outside them without a red flag.

It reads the file

A fan spike or a hand-added override in the G-code settles in seconds what weeks of forum threads can't.

It knows your shop

Your printer's limits, your nozzle, even how hot your dryer gets. Advice your machine can't follow never reaches you.

Any printer, any browser

Bambu, Prusa, Creality, Elegoo or your own build. Nothing to install.

Pricing

Less than a spool of filament a month.

The G-code and 3MF checker, printer checks, Fit Check, voice, journal, spool tracker and failure library are free and unlimited on every plan. Plans set how many AI answers you get each month.

Free$0
  • 3 failure diagnoses
  • 3 settings profiles
  • 2 CAD parts
  • 15 questions
Start free
Maker · most popular$8.99 /month
  • 40 failure diagnoses
  • 30 settings profiles
  • 25 CAD parts
  • 300 questions
Choose Maker
Pro$19.99 /month
  • 150 failure diagnoses
  • 100 settings profiles
  • 100 CAD parts
  • 1,000 questions
Choose Pro

For comparison, failure-diagnosis apps and AI CAD apps each charge about $8–10 a month on their own. Maker gets you both, plus everything else.

Questions

Before you sign up

Do I need to install anything?

No. Engage The Beast 3D runs in your browser on a computer, tablet or phone. You only need your slicer, which you already have.

Does it work with my printer?

Yes. Pick it from the list, or type it in with its bed size and it works from your settings. 424 printer models are built in. The G-code checker reads files from OrcaSlicer, Bambu Studio, PrusaSlicer and Cura.

Is my G-code uploaded?

No. The file is read on your own device. Only the short list of findings is sent with your question.

Can I really just talk to it?

Yes, in Chrome, Edge and Safari. Tap the microphone in any box, or turn on Talk mode in Ask for a hands-free conversation. Your browser turns speech into text; answers can be read back to you.

How good is the CAD?

It's built for functional parts: brackets, clips, boxes, spacers, adapters and mounts. It works from your measurements and shows the real dimensions so you can check them before printing. Organic shapes like figurines are not its job.

Can I cancel?

Any time, from the Billing button in the app. You keep your plan until the end of the month you paid for.