How to Quote Reverse Engineering Projects

Reverse engineering requests land in your inbox with a broken part, a worn tool, or a legacy component and a simple ask: “Can you make this again?” The customer sees duplication. You see a chain of unknowns — scanning resolution, CAD reconstruction, material matching, inspection protocols, and the inevitable design iterations before first article approval.

Quoting these jobs like standard production work is a fast way to lose margin. The effort sits upstream of the machine, in engineering hours that are hard to predict and easy to underprice. Below is a practical framework for building quotes that cover the real scope and protect your shop.

Separate the Workstreams

A reverse engineering quote has three distinct phases, each with different risk profiles:

• Data capture: 3D scanning (structured light, laser, CT), CMM probing, or photogrammetry. Include fixture setup, part prep (coating reflective surfaces), and file cleanup (mesh repair, alignment).
• CAD reconstruction: Surface modeling from scan data, parametric solid creation, feature recognition, and design intent decisions (e.g., nominal dimensions vs. as-worn geometry).
• Validation & iteration: First article inspection (FAI), deviation reports, customer review cycles, and model updates before production release.

Line-item each phase. Do not bundle them into a single “engineering” charge — customers need to see where time goes, and you need to track actuals against each bucket for future estimating.

Define the Input Quality Up Front

The condition of the source part drives 60–80% of the engineering effort. Write the quote assumptions explicitly:

• Part condition: intact, cracked, worn, corroded, missing features.
• Access: can it be fixtured for scanning? Are internal features reachable?
• Material identification: known grade, unknown (requires spectroscopy), or obsolete spec.
• GD&T requirements: critical datums, tolerance zones, surface finish callouts.

If the customer cannot confirm these, quote a paid assessment phase (2–4 hours) to evaluate the part before committing to the full reconstruction. This protects you from open-ended discovery and gives the customer a low-risk entry point.

Price the Modeling Strategy, Not Just Hours

CAD reconstruction approaches vary widely in effort:

• Dumb solid / STEP export: Fastest, suitable for non-critical fixtures or visual references.
• Parametric feature-based model: Required when the customer needs design intent preserved (draft angles, fillet radii, hole patterns) for future modifications.
• Hybrid: critical features parametric, rest as dumb geometry. Common sweet spot for functional replacements.

Quote the modeling strategy as a choice with price deltas. Example: “Option A — parametric solid model: $3,200. Option B — hybrid model: $1,900.” This shifts the conversation from “your price is high” to “which deliverable matches your need?”

Build Iteration Buffers Into the Quote

First article rarely passes on the first try. Scan-to-CAD deviation, material property mismatch, or undocumented design intent (e.g., a clearance that looks like interference) trigger revision cycles. Two practical approaches:

1. Fixed revision count: Include two revision cycles in the base quote. Additional cycles at a pre-agreed hourly rate.
2. Time-and-materials cap: Quote the reconstruction fixed, then T&M for validation with a not-to-exceed cap (e.g., 15% of reconstruction fee).

Whichever method you choose, document the acceptance criteria: inspection method, sampling plan, and deviation thresholds. Ambiguity here creates scope creep.

Account for Hidden Costs

Three line items shops consistently forget:

• Scan data management: Large mesh files, version control, secure transfer — budget 0.5–1 hour per project.
• Material sourcing & verification: If the grade is unknown, include time for lab testing or supplier qualification.
• Documentation package: Inspection reports, material certs, model tree screenshots, deviation color maps. Customers often require these for their quality systems.

Use a Template That Enforces Discipline

Reverse engineering quotes vary too much to wing it each time. A structured template ensures you:

• Capture all assumptions and exclusions.
• Present options (modeling strategy, inspection level) with clear pricing.
• Track actual hours per phase to refine future estimates.
• Convert the approved quote into a work order without re-entry.

Solvi’s quoting engine lets you build reusable templates with conditional logic — so the line items, calculations, and options appear automatically based on the project type. You configure the rules once; the quote assembles itself for each new RFQ. See how it works.

Close the Loop With Post-Job Review

After delivery, compare actuals to the quote by phase. Where did scanning overrun? Was the modeling strategy wrong? Did the customer request extra revisions? Feed those deltas back into your template. After 5–10 projects, your reverse engineering quotes become predictably profitable — and your sales cycle shortens because customers trust the detail.

Reverse engineering will always carry discovery risk. The goal isn’t to eliminate it — it’s to make the risk visible, billable, and bounded. Structure the quote around the workstreams, define the inputs, price the deliverable options, and buffer the iterations. Your shop keeps margin; the customer gets clarity.