How it works

Realengineering.Realfeedback.

01

Pick a real challenge

200+ problems across CAD, calculations, DFM and FEA — each modeled on what top companies actually ask. No textbook filler.

Problem set

200+ company-style challenges

CADDFM

Hex lug nut

CAD · 8 steps

+7 min
2

Sheet-metal enclosure

DFM · 14 steps

Solve

Lofted turbine blade

Surfacing · 20 steps

Top-down gearbox layout

Assembly · 16 steps

+0.7 h

02

Solve it the way you'd work

Real workflows, not multiple choice — parametric sketching, assembly mates, drawings and tolerances. The clock runs, just like the interview.

enclosure.sldprtMedium
35:02
Engineering drawing — section, isometric and detail views of a bracket
Fully defined100%

03

Get instant AI feedback

FixtureAI reviews your work line by line and explains the why behind every note — then logs verified hours that prove your skill to recruiters.

FixtureAI Review

enclosure.sldprt

DFM7894
Manufacturability

Wall thickness is 0.8 mm — below the 1.2 mm minimum for ABS injection molding. Thin walls cause sink marks; increase it for a reliable fill.

Draft angles 2°+ on all faces
Rib thickness ≤ 60% of wall
Verified +0.6 hView full report

The Curriculum

EverythingyouneedtoGethired.

Six focused modules covering every skill top companies test for. Tap one to see what you'll practice.

01

Mechanics

First Principles

Where every interview begins.

Practice First Principles

Frequently
asked questions

FixtureAI

A senior engineer,
reviewing every move.

Embedded in every problem, FixtureAI flags what textbooks skip — manufacturability, tolerances, design intent — and explains every fix so it sticks.

Real-time feedbackStep-by-step solutionsVoice mock interviews
Submitted my gearbox housing — how's the DFM?

Two things before this is production-ready:

The bolt bosses have no draft — add 1.5° so it ejects cleanly.

Uniform 3 mm walls — great for even cooling.

gearbox-housing.sldprt

DFM score · 78 → fix to 94

+0.5 h

Engineers love
practicing here.

Join thousands of mechanical engineers who improved their skills and landed jobs at top companies.

Tesla logo

FixtureLabs transformed how I prepare for interviews. The CAD challenges are exactly what top companies ask.

Mechanical Engineer

Tesla

Apple logo

The AI feedback on my designs helped me understand DFM principles I struggled with for years.

Design Engineer

Apple

SpaceX logo

Finally a platform that teaches real engineering, not just theory. The problems feel like actual work.

Product Engineer

SpaceX

MIT logo

FixtureAI is like having a senior engineer available 24/7. It explains concepts better than my textbooks.

Graduate Student

MIT

Google logo

The calculations module helped me ace my technical rounds. Highly recommend for interview prep.

Mechanical Engineer

Google

Meta logo

Best investment in my engineering career. The fundamentals section cleared so many gaps.

Senior Engineer

Meta

Choose your path.

One-time purchase. A full year of access. No subscriptions, no hidden fees.

Fundamentals

Strong engineering foundations.

$29$59

One-time · 1 year access

  • 2 modules included
  • 50+ practice problems
Get started

Plan highlights

  • Fundamentals & Calculations
  • AI-powered feedback
  • Step-by-step solutions

Design

Master CAD and design thinking with real tasks.

$29$59

One-time · 1 year access

  • CAD Challenges module
  • Real-world CAD tasks
Get started

Plan highlights

  • Surface modeling
  • AI-powered feedback
  • Step-by-step solutions

Manufacturing

Learn design for manufacturing like a pro.

$29$59

One-time · 1 year access

  • DFM Analysis module
  • Process optimization
Get started

Plan highlights

  • Real DFM challenges
  • AI-powered feedback
  • Cost-aware design

All Access

Best value

Everything you need to be fully interview-ready.

$79$149

One-time · 1 year access

  • All 5 modules
  • Interview Studio included
Get started

Plan highlights

  • Every module included
  • Priority support
  • All future updates free

Early bird pricing ends Jul 31, 2026 · Secure payments via Stripe

Start practicing.

Your next interview is closer
than you think.