Most digital manufacturers have a solid handle on quoting CNC parts, sheet metal, or 3D printed components. But the moment a customer sends an RFQ that includes a PCB, a wiring harness, or an embedded sensor, the familiar quoting logic starts to break down. The mechanical side is straightforward — material, machine time, setup, post-processing. The electronics side introduces component sourcing lead times, soldering or potting steps, functional testing, and a whole different failure mode profile.
If you’re quoting these jobs the same way you quote a bracket or a housing, you’re either leaving money on the table or taking on hidden risk. Here’s how to build a quote structure that captures the real cost of electromechanical assembly.
Separate the BOM Into Mechanical and Electrical Lines
Start by splitting the bill of materials into two distinct categories: mechanical (raw stock, fasteners, inserts, consumables) and electrical (PCBs, connectors, wire, sensors, firmware-loaded MCUs, potting compound). Each category has its own cost drivers, lead times, and risk profiles. Mechanical costs scale with geometry and machine time. Electrical costs scale with component availability, assembly labor, and test coverage.
In your quoting template or software, treat these as separate line groups with their own markup rules. A 20% markup on aluminum bar stock doesn’t make sense for a custom PCB with a 12-week lead time and minimum order quantity.
Account for Component Procurement Risk
Electronic components introduce supply chain variables that don’t exist in pure mechanical jobs: allocations, end-of-life notices, counterfeit risk, and minimum order quantities (MOQs) that force you to buy 1,000 units when the job only needs 50. Quote the procurement effort explicitly — time spent qualifying alternate parts, managing distributor relationships, and buffering for attrition during assembly.
If the customer specifies a sole-source component, add a supply chain risk premium. If they’re open to alternates, quote a lower-risk option alongside the specified part so they see the cost difference.
Model Assembly Labor as Discrete Operations
Electromechanical assembly isn’t one “assembly” line item. Break it into measurable operations: SMT pick-and-place (if in-house), through-hole soldering, wire cutting/stripping/crimping, connector mating, potting or conformal coating, mechanical fastening, and final integration. Each operation has a setup time, a per-unit cycle time, and a skill level requirement.
Track these in your MES or routing so future quotes pull actuals, not estimates. The first time you quote a potting operation, you’ll guess. The fifth time, you’ll know the mix ratio, degassing cycle, and cure time per unit.
Build In Functional Test, Not Just Inspection
Mechanical parts get dimensional inspection. Electromechanical assemblies need functional test: continuity, voltage rails, communication bus integrity, firmware boot, sensor calibration. Each test requires a fixture, a test plan, and operator time. Quote test development as an NRE line item if the fixture doesn’t exist. Quote per-unit test time as a recurring cost.
Don’t forget rework loops. A 5% first-pass yield on a complex assembly means budgeting for diagnostic time, desoldering, and retest. Capture this in your quote or absorb it in your margin — your choice, but make it conscious.
Handle Firmware and Configuration as Deliverables
If the assembly ships with programmed firmware, calibrated parameters, or serialized configuration, that’s intellectual property and labor. Quote firmware flashing time, verification, and version control. If the customer provides hex files, quote a checksum verification step. If you’re writing or modifying firmware, that’s a separate engineering engagement — quote it that way.
Use a Quote Structure That Scales With Complexity
A simple sensor bracket with a potted cable doesn’t need the same rigor as a 12-PCB rack with backplane wiring. Build tiered quote templates: Level 1 for mechanical + simple wire harness, Level 2 for PCB integration + basic functional test, Level 3 for full box-build with firmware, calibration, and burn-in. Your sales team picks the template; the estimator fills in the numbers.
Solvi’s instant quoting engine lets you configure these templates once, then apply them per RFQ — so the structure stays consistent even when the complexity changes. See how it works.
Conclusion
Quoting electromechanical assemblies isn’t about adding a fudge factor to your mechanical quote. It’s about recognizing a different production model — one with procurement risk, multi-skill labor, test engineering, and firmware deliverables. Build the structure once, refine it with actuals, and you’ll stop guessing on hybrid jobs. Ready to standardize your electromechanical quotes? Talk to the Solvi team about a quoting engine built for digital manufacturing.
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