What to Send for a Reverse Engineering Quote

Getting an accurate reverse engineering quote fast comes down to one thing: giving your provider enough information to price the job without guessing. Most RFQs don’t do that. This checklist fixes it. Learn more about our reverse engineering services and use this page as your go-to reference before you send a single email.

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Why Your Quote Request Probably Gets Delayed (And How to Fix It)

In practice, most reverse engineering RFQs arrive missing at least three or four critical data points. The usual culprits: no stated accuracy requirement, no specified deliverable format, no clarity on end-use intent, and vague or missing part dimensions. Each gap triggers a separate clarification email, and those emails stack up fast.

A 2-5 business day delay is the norm when intake is incomplete. That delay isn’t just inconvenient - it pushes your job to the back of the scheduling queue while the provider waits on you. And here’s the economics that nobody talks about openly: vendors price reverse engineering work from risk. An underdefined part forces the estimator to pad the quote with contingency. A fully defined part gets a tighter, more competitive number because there’s nothing to hedge against.

The jobs that move from initial contact to fixed-price quote in under 24 hours are the ones where the intake information is complete on the first email. The ones that take a week are the ones where the provider is asking “what accuracy do you need?” on day two and “can you clarify end-use?” on day four.

This page gives you a single, printable intake checklist so your first email is also your last clarification. For context on what reverse engineering actually means and where it fits in a broader documentation workflow, that primer is worth a read first.

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The 7 Things Every Reverse Engineering Quote Needs

No exceptions. Every one of these items affects price, timeline, or both.

1. Physical part access or existing scan data.
Can you ship the part? Allow on-site scanning? Or do you already have scan files (.e57, .ptx, .rcp, .zfprj) from a prior session? Existing scan data can eliminate the scanning fee entirely - send it if you have it.

2. Overall envelope dimensions (L x W x H) and weight.
A 40 mm aluminum pin and a 1,200 mm pump casing use completely different equipment. For large assemblies, a terrestrial laser scanner captures the envelope. For small precision parts, a handheld structured-light or arm scanner handles detail and precision feature capture. Dimension estimates are fine - the provider is not holding you to 1 mm accuracy on the intake form.

3. Required accuracy / accuracy tier.
The accuracy tier defines the positional tolerance of the captured geometry, and it drives scanner selection, workflow, and cost. Your end-use determines which tier you need. If you don’t know, state your machinist’s or molder’s tolerance requirement and the provider will map it.

4. Desired deliverable format.
STEP, IGES, Parasolid, SolidWorks (.sldprt), CATIA, NX, Inventor, DXF/DWG 2D drawing, or mesh only (.STL/.OBJ)? Parametric CAD with a full feature tree costs more than a dumb STEP solid. Mesh is cheapest. Specify this upfront - the price difference between “STEP file” and “parametric SolidWorks model” is significant and depends on part complexity.

5. End-use intent.
Reproduction machining, fit-check/retrofit, FEA simulation, injection-mold tooling, or inspection comparison? This completely changes the modeling strategy. A part destined for a machinist needs nominal geometry and GD&T. A part going into FEA simulation needs clean NURBS surfaces with no slivers or gaps.

6. Material and manufacturing process context.
Plastic injection-molded parts need draft angles recovered. Castings need fillet geometry reconstructed. Machined parts may need nominal idealized geometry with GD&T callouts rather than the as-scanned worn surface. Knowing the manufacturing heritage shapes every modeling decision.

7. Quantity and timeline.
Single prototype vs. batch documentation of 20 components. Rush delivery vs. standard 5-10 business day turnaround.

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Part Photography: How to Take Useful Reference Photos Before You Ship

Good reference photos serve two functions: they let the provider verify they understand the part before it ships, and they catch ambiguities that would otherwise surface mid-project.

Minimum shot list (8-12 photos):

• Top, bottom, and all four sides (6 shots)
• Both datum faces or primary reference surfaces
• All threaded or bored features (close-up, in focus)
• Any brand markings, lot numbers, or legible stamped tolerances
• Any damage, wear, or missing material - clearly lit, close-up

Scale reference: Include a ruler or a standard US quarter in at least two shots - one wide shot showing overall envelope, one close-up showing a critical feature.

Show the damage clearly. The modeler needs to distinguish “nominal geometry I want restored” from “damage I want to ignore.” An impeller with tip erosion and an intact impeller of the same part number require different modeling strategies. Don’t hide the wear.

Internal features: If the part has internal channels, enclosed cavities, or blind pockets, note them explicitly in writing. This triggers a CT scan conversation - standard structured-light and arm scanners cannot see inside enclosed geometry. See our page on CT scanning for internal features that standard scanners cannot reach for the full workflow.

File format and delivery: JPEG or PNG at minimum 2 MP per image. Share via a Google Drive link or WeTransfer. Do not compress 12 photos into a single ZIP inside an email attachment - compression artifacts and email size limits both create problems. A Drive folder with labeled images (TOP.jpg, BORE_CLOSEUP.jpg) takes two minutes to set up and saves everyone time.

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Accuracy Requirements: Matching Accuracy Tier to Your End-Use

The accuracy tier is the most consequential spec in any reverse engineering quote, and the most commonly omitted. Here’s how accuracy tiers map to real-world applications and scanner selection.

Hybrid 3D scanning + CMM workflow: For tight-tolerance jobs, a structured-light scanner is typically used to capture the overall freeform geometry and surface topology, then a coordinate measuring machine (CMM) probes critical datums, bore diameters, and GD&T callouts. The two datasets are merged in CAD - the scanner contributes the organic surfaces, the CMM contributes the traceable dimensional callouts. Neither tool alone gets you there cost-efficiently at that tolerance level.

Practical rule of thumb: Tell the provider the tolerance your machinist or injection mold maker actually needs on the critical features. Scanner selection follows from that. A bracket that needs a ±0.3 mm bore-to-bore position is a Tier 2 job. A turbine blade with a ±0.08 mm profile tolerance is a Tier 3 job. You don’t need to know the scanner spec - you need to know what your downstream process requires. For more on the hybrid 3D scanning and CMM approach, see the services overview.

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Deliverable Formats Explained: Dumb Solid vs. Parametric CAD vs. Mesh

Understanding what you’re buying prevents the single most common post-delivery complaint in reverse engineering: “I can’t edit this file.” Here’s the breakdown.

On deliverable selection: For a worn bronze pump impeller destined for reproduction machining, a STEP file (dumb solid) plus a three-view PDF drawing with GD&T callouts to ASME Y14.5-2018 is typically the right deliverable. A parametric SolidWorks model with a full feature tree costs meaningfully more and makes sense only if the client plans to redesign the geometry downstream. The STEP is sufficient for the machine shop.

Quote tip: Specify “STEP + PDF drawing” vs. “parametric SolidWorks” explicitly in your request - the price difference is real. To understand how the full scan-to-CAD workflow unfolds from scan registration through surface fitting and solid reconstruction, that post covers each step in depth.

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Special Cases That Change Everything: Cast Parts, Threads, Internal Features, and Worn Geometry

These are the four scenarios that catch projects mid-stream if they’re not flagged upfront.

Cast and forged parts: Draft angles, parting lines, and blend fillets are manufactured features, not scan artifacts or modeling errors. Before modeling begins, the provider needs to know: do you want as-scanned geometry that faithfully represents the casting as it exists, or idealized nominal geometry with recovered design intent (cleaned-up fillets, symmetric draft, etc.)? The second option takes longer and costs more. Our page on how we handle draft angles and fillets on cast parts walks through the decision logic.

Threaded features: Scanners - even high-resolution structured-light systems - cannot resolve thread form geometry at tight tolerances. Thread class (UNC/UNF, metric, ACME, Whitworth) must be specified separately. Before you ship the part, run a thread gauge over every threaded hole and external boss and record the class and pitch. If you don’t have a thread gauge, note that explicitly - the provider will measure on receipt, but it adds time.

Internal channels and enclosed cavities: Standard scanners see surfaces, not interiors. If your part has internal coolant channels, blind pockets deeper than accessible by the scanner beam, or fully enclosed voids, flag them before the quote. Options are industrial CT scanning (practical envelope varies by system and part density - confirm the specification with the CT provider) or controlled disassembly/sectioning. See CT scanning for internal features that standard scanners cannot reach for the full breakdown. Missing this conversation pre-quote can double the project cost and timeline.

Worn or damaged geometry: A propeller blade with significant tip erosion and a propeller blade that’s undamaged require fundamentally different modeling approaches. Specify which surfaces represent truth and which are damage artifacts you want the model to ignore or idealize. “Model the part as it should be, not as it is” is a valid instruction - but it requires design-intent reconstruction, which is more modeling-intensive than as-scanned capture.

Multi-body assemblies: If you need each component modeled separately with mating constraints captured (gap tolerances, interference fits), state this. A five-component gearbox cover assembly at moderate accuracy is not five times the cost of one component, but it is significantly more than one. Each mating interface requires a separate setup, and the registration between components adds QC time.

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How to Ship Your Part (And What Happens When You Can’t)

Shipping: Double-box with foam padding cut to the part profile. Do not use loose packing peanuts for precision parts - they shift in transit. For parts valued over $500, insure the shipment and photograph the packed box before sealing it. Include a packing slip inside the box with your name, phone number, return shipping address, and the quote or PO reference number. Parts that arrive with no packing slip create delays.

Parts that cannot leave the facility: Installed equipment, live production line components, and safety-critical systems can’t always be removed. In these cases, we bring the scanner to the part. Our handheld scanner can be set up in most industrial environments within 30 minutes. For larger assemblies - a pump skid, a vehicle subframe, a large gearbox - we field-scan the envelope with our Trimble X7, then bring in the handheld for precision feature capture. Note facility location, access hours, and any required safety certifications (OSHA 10, site-specific EHS protocols) when you request the quote.

Existing scan data: If you had the part scanned previously and have the raw files (.e57, .ptx, .rcp, .zfprj), send them. Provide the scanner make and model and the date of capture so accuracy can be validated before committing to a deliverable tolerance. In many cases, usable existing scan data eliminates the scanning fee entirely and meaningfully reduces total project cost. For more on point cloud to CAD services and what constitutes usable scan data, that overview covers file quality requirements.

Part return: Confirm in your initial email whether you need the part returned after scanning, and whether expedited return shipping is required. We default to ground return unless instructed otherwise.

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What a Well-Structured Quote Request Looks Like (Template)

Copy this structure verbatim. It mirrors the intake format used internally to issue fixed-price quotes in under 24 hours.

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Subject: RE Quote Request - Pump Impeller - Acme Manufacturing - Need by June 15

Part description: Bronze centrifugal pump impeller. OAL dimensions: 220 x 220 x 85 mm. Weight: approximately 1.8 kg. Condition: moderate wear on blade tips, hub bore in good condition.

Accuracy requirement: ±0.3-0.5 mm overall. Bore diameter and keyway to ±0.05-0.1 mm. Hub face flatness measurement required per ASME Y14.5.

Deliverable: STEP file (AP214) + 3-view PDF drawing with GD&T callouts, ASME Y14.5-2018. Title block in our format (template attached as PDF).

End-use: Reproduction machining run of 5 parts in bronze C932. No design changes - as-scanned geometry only. Parts will be sourced from a local machine shop; they require STEP + drawing.

Timeline and constraints: CAD delivery within 10 business days. Part available to ship Monday. Return shipping to same address, ground is fine.

Attachments: 11 reference photos (Google Drive link below), partial hand-sketch with approximate dimensions, title block template.

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That email takes 10 minutes to write. It gets a fixed-price quote returned in under 24 hours. Compare that to an email reading “attached is a photo of a pump part, please quote” - which gets a clarification request back within 2 hours and a quote five days later, if you’re lucky.

For a printable version, see our downloadable reverse engineering quote checklist.

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Typical Cost Ranges and Turnaround Times by Part Type

These ranges reflect US-based providers using calibrated, current-generation equipment. Offshore mesh-only quotes may appear cheaper but typically exclude GD&T recovery, 2D drawing production, accuracy validation, and revision rounds.

For more on the scan-to-CAD workflow applied to discontinued components, see our coverage of reverse engineering discontinued and obsolete spare parts.

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After You Send the Quote Request: What Happens Next

Step 1 - Review and clarification. We review your photos, dimensions, and intake info. If anything is ambiguous, we send one consolidated clarification email - not a rolling thread of individual questions over three days. You should expect this within 2-4 business hours of submission during business days.

Step 2 - Quote issued. The quote specifies: scan method and equipment, accuracy tier achievable, deliverable format, number of revision rounds included, payment terms, and estimated delivery date. A well-defined intake produces a fixed-price quote. An underdefined intake produces a range with contingency.

Step 3 - Part ships or on-site scan scheduled. You provide tracking. For on-site work, we coordinate access, safety requirements, and scan date.

Step 4 - Scanning session. A single small-to-medium part on a handheld scanner typically takes 1-3 hours including setup, scanning, and initial registration check. A multi-body assembly with complex geometry may run a full day. We confirm the scan quality on-site before packing up - we don’t discover registration failures back at the office.

Step 5 - Modeling and internal QC. Parametric rebuild or surface-fit to the registered point cloud, followed by an internal deviation check comparing the final solid back to the scan data. We don’t deliver a model that hasn’t been checked against the source.

Step 6 - Delivery. Files transferred via secure link (not email for anything over ~10 MB). Revision window is typically 5-10 business days from delivery.

Step 7 - Part return. Shipped to the address on your packing slip unless you’ve specified a different return address.

Pro tip: Request a preliminary color deviation map before we close the project. This is a scan-vs.-model comparison rendered as a heat map - green is within tolerance, red/blue is out. Reviewing it before final delivery lets you identify any zones where you need tighter accuracy and get them addressed while the project is still open, rather than after.

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FAQ

Can I get a reverse engineering quote without shipping the part?

Yes - send high-resolution reference photos (8-12 shots with a scale reference), overall envelope dimensions, and any existing drawings, even partial or marked-up PDFs. For a ballpark budget range, this is usually enough to bracket the cost tier. For a fixed-price quote, most providers need either the physical part or existing scan data (.e57, .rcp, .ptx). On-site scanning is also an option for installed equipment or safety-critical production parts that cannot be removed - note the facility location and any access or safety certification requirements when you inquire.

What CAD file format should I request for a machined replacement part?

Request a STEP file (AP214 or AP242) plus a 2D PDF drawing with GD&T callouts to ASME Y14.5-2018. STEP is universally importable into any CAM software and any CAD package. Native parametric formats (SolidWorks .sldprt, Inventor .ipt, NX .prt) add cost but are worth it if you plan to modify the design downstream. Avoid requesting mesh-only deliverables (.STL, .OBJ) for machined parts - mesh files do not contain true geometry, dimensional tolerances, or machineable surfaces. A CAM programmer cannot work from an STL.

What accuracy can I expect from 3D scan-based reverse engineering?

It depends on scanner selection and part size. For precision mechanical parts, structured-light systems can achieve sub-0.1 mm accuracy on smaller features, with tighter-tolerance bores, datums, and GD&T callouts typically handled through a hybrid workflow combining structured-light scanning with CMM probing. Always ask the provider for a documented accuracy statement referencing the scanner’s current calibration certificate and the specific tolerance tier they’re quoting to. A vendor who can’t provide both is quoting blind.

How do I specify tolerances for a part I don’t have drawings for?

Start with the manufacturing process. Machined parts typically hold ±0.025-0.1 mm on critical features. For injection-molded parts, tolerances are commonly looser - confirm the requirements with your mold maker for the specific material and geometry. If you’re reproducing a part for a fit-critical assembly, measure the mating features in your assembly with a caliper or micrometer and note those dimensions as minimum constraints in your intake email. The RE provider maps those requirements to the appropriate accuracy tier and scanner selection. You don’t need a drawing - you need to know what has to fit and what the acceptable clearance is.

What is the difference between a scan-to-mesh and a scan-to-CAD deliverable?

A mesh is a raw polygonal surface (STL/OBJ) - a tessellated approximation of the scanned surface. It’s useful for 3D printing a replica but cannot be machined from directly, has no true geometry, and doesn’t support dimensional tolerancing. A scan-to-CAD deliverable reconstructs freeform and prismatic geometry into a NURBS surface model or B-rep solid (STEP/IGES), where every surface is mathematically defined, dimensionable, and machineable. The reconstruction process takes 2-5x longer than mesh export, which is why it costs more - but it produces a file that a machine shop, mold maker, or FEA engineer can use without conversion.

Do I need a hybrid 3D scanning and CMM workflow, or is scanning alone sufficient?

For most mechanical parts at moderate accuracy (±0.3-0.5 mm), structured-light or arm scanning alone is sufficient. A hybrid CMM workflow is warranted when: tolerances are tighter than ±0.1 mm on specific features; GD&T callouts (flatness, cylindricity, true position) need to be measured and formally tabulated per ASME Y14.5; or the part will be submitted to a customer or regulatory body requiring traceable measurement data with a calibration chain. Specify these requirements upfront - a hybrid CMM workflow carries a meaningful cost premium over scan-only, and it is the only path to a traceable, formally documented measurement result at tight tolerance tiers.

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Get Your Fixed-Price Quote in Under 24 Hours

Ready to get a fixed-price reverse engineering quote without the back-and-forth? Use the intake checklist above, gather your part photos and envelope dimensions, note your required accuracy tier and deliverable format, and submit your request at weare-capture.com/services/scan-to-cad-reverse-engineering/. When the intake is complete, most quotes turn around in under 24 hours. No padding, no contingency ranges, no clarification loops - just a number you can take to your project manager.