How to Quote Additive Manufacturing Builds

Additive manufacturing quoting trips up shops that treat it like CNC or sheet metal. A 3D printed part isn’t just material plus machine time — it’s build orientation, nesting density, support removal, heat treatment, and inspection all rolled into one. Miss any variable and the job either loses money or prices you out of the running.

Start With the Build Layout, Not the Part

The first quoting mistake is pricing a single part in isolation. In powder bed fusion or binder jet, you’re selling space on a build plate. The real cost driver is how many parts fit — and that depends on orientation, support structures, and minimum spacing rules.

Before calculating anything, nest the parts (or a representative batch) in your build preparation software. Note:

• Total build height and layer count
• Number of parts per build
• Support volume and surface area
• Unused powder that becomes waste or recycle feedstock

Divide the full build cost by usable parts to get a per-unit baseline. This single step eliminates the biggest source of underquoting.

Break Machine Time Into Layers, Not Hours

Machine hour rates work for CNC where setup dominates. In AM, the machine runs unattended for 20+ hours. A $150/hr rate applied to a 40-hour build suggests $6,000 of machine cost — but the operator touched it for 30 minutes.

Instead, calculate:

• Layer time × layer count = total laser/scan time
• Recoater travel and dwell time per layer
• Inert gas consumption per build hour
• Power draw (often 5-15 kW for metal PBF)

Apply your actual overhead allocation to active build time only. Idle time between builds (cooling, powder sieve, plate swap) gets allocated across the week’s throughput, not a single job.

Account for Material Beyond Net Weight

Quoting net part weight × material cost per kg ignores reality. You’ll need:

• Support structure material (often 10-30% of part weight)
• Powder refresh ratio — virgin powder mixed with recycled to maintain flow and chemistry
• Powder loss during sieving and handling (typically 2-5% per cycle)
• Minimum fill volume for the build chamber, even if the build is sparse

Track actual consumption over 10+ builds to establish a material multiplier for each machine-material combination. A 1.8-2.5x multiplier on net part weight is common for metal PBF.

Post-Processing Is Where Margins Hide

AM parts rarely ship off the build plate. Budget each step separately:

• Support removal: manual (labor hours), CNC machining, or automated (tumbling, media blast)
• Heat treatment: stress relief, HIP, solution anneal — include furnace time, gas, and fixturing
• Surface finishing: machining critical faces, polishing, coating, plating
• Inspection: CT scan, CMM, tensile coupons, density coupons — often customer-driven but you quote it

If the customer hasn’t specified post-processing requirements, quote a “standard” tier (support removal + stress relief + light bead blast) and list upgrades as line items. This prevents scope creep and makes your quote comparable to competitors who lowball the base price.

Build Failure Risk Needs a Line Item

Even mature AM processes have 2-5% build failure rates from gas flow issues, recoater crashes, or powder contamination. A failed 40-hour titanium build isn’t just lost time — it’s wasted powder, gas, and a delayed delivery.

Add a risk surcharge (3-8% of build cost) that scales with:

• Build height (taller = more layers = more failure modes)
• Material reactivity (Ti, Al more sensitive than SS, Inconel)
• Machine maturity (new parameter sets vs. validated recipes)
• Customer tolerance for re-build lead time

Call it “build assurance” or “process reserve” on the quote. Sophisticated buyers expect it; unsophisticated ones need the education.

Quote the Data Package, Not Just Parts

Defense, aerospace, and medical customers increasingly require build reports, material certs, CT data, and traceability records. Generating these takes 2-8 hours of engineering time per build.

Include a “documentation package” line item with tiers:

• Basic: build log, material cert, dimensional report
• Standard: + layer-by-layer monitoring data, heat treat certs
• Full: + CT scan data, tensile test reports, full traceability tree

This turns a cost center into a revenue line and differentiates you from shops that treat documentation as free.

Put It All Together in a Repeatable Template

Build a quote calculator (spreadsheet or software) with these fixed sections:

1. Build layout analysis (parts/build, supports, height)
2. Machine consumption (laser time, gas, power, overhead allocation)
3. Material consumption (net weight × validated multiplier)
4. Post-processing (line items per operation)
5. Quality & documentation (tiered packages)
6. Risk reserve (percentage of above)
7. Margin target

Validate the template against your last 20 completed builds. Adjust multipliers until predicted cost lands within ±10% of actual. Then lock it down and train every estimator on the same method.

Solvi’s instant quoting engine lets you codify this exact structure — build layouts, material multipliers, post-processing tiers, and risk reserves — so every quote follows your validated method without spreadsheet chaos. See how it works at https://www.solvi.io.