STEP Quoter
Drop a STEP file in, get a costed quote grounded in geometry and historic pricing.
- Role
- Design and build
- Period
- 2026
- Status
- In beta
- Stack
- Next.js, TypeScript, Supabase, 3D geometry analysis
The problem
Estimating a new carbon, machined, printed or fabricated part relied on experience and a few reference jobs. Similar parts were priced inconsistently, and a loss-making quote only became visible after the work was done.
What I built
- Parses the dropped STEP file and derives a complexity rating from the geometry (surface area, curvature, feature density) rather than from a guess.
- Prices against a historic dataset of roughly ten costed programmes, each with hundreds of parts and their geometry, so a re-quote of a similar part references what it actually cost last time.
- Folds in labour rates, machine and energy costs, material costs and external supplier prices, with manual overrides where the estimator knows better.
- Shows cost, sale price and margin side by side before anything is sent, and gates firm quotes behind approval.
Outcome
Anyone in the business can produce a consistent first-pass estimate, and the commercial team sees margin before quoting rather than after. Popular enough internally that it's being redesigned from a tool into a product.
Pricing data and rates are confidential and not shown here.

