Plan a prototype
What Should Your First Invention Prototype Actually Prove?
Choose the smallest prototype that resolves a costly uncertainty, with a test question, acceptance rule, and practical build brief.
5 min readPlan a prototype
Practical guides for independent inventors. Start with the question closest to your next decision.
Plan a prototype
How to Budget for a Prototype Without Spending Everything on Version One
Build a prototype budget around learning stages, test costs, repeat builds, and a decision reserve instead of one optimistic fabrication quote.
5 min read
Plan a prototype
How to Turn “Easy to Use” and “Durable” into Testable Prototype Requirements
Replace vague prototype requirements with measurable conditions, acceptance rules, and a traceable checklist that supports design decisions.
5 min read
Plan a prototype
How to Write a Prototype Brief a Designer Can Quote
Turn an invention idea into a quoteable prototype brief with scope, interfaces, measurable outcomes, files, and revision boundaries.
5 min read
Plan a prototype
Proof of Concept vs. Functional Prototype: What Evidence Carries Forward?
Understand what each prototype proves and document the substitutions that prevent an early demonstration from becoming false production confidence.
5 min readPrepared by Inventor Underground. Examples are illustrative unless a source says otherwise. How these guides are prepared · Send a correction