Prototype before you build the real thing

Small, cheap tests that save expensive mistakes.

Pick the riskiest part

The part you're least sure about: a fit, a load, a battery's run time. Test that first.

Mock it up cheaply

Cardboard, plywood, tape on the floor or a 3D print show sizes and fit before you cut real material.

Test one thing at a time

If you change two things at once, you won't know which one fixed it.

Measure, don't guess

Write down what you measured, then ask the AI to update the draft with the real numbers.

Keep safety first

Never test anything with stored energy, fuel, high voltage or a load over people without a qualified person.

Then build in phases

Follow the build phases in your draft and check each one before you start the next.

Concept drafts are for planning, budgeting and talking to professionals. They are not engineering or build plans. Have a qualified professional check any design before you build or use it.