---
title: "Partimation — cost the whole assembly, not just the parts in it"
url: https://partimation.com/assembly/
description: "Group parts you've already analyzed into one costed assembly — cheapest route per part, tooling counted once, critical-path lead time. Drop a multi-body STEP or 3MF and it splits itself, then checks for parts that don't clear. Start free."
product: "AssemblyDFM"
domain: assemblydfm.com
---

# See what the whole assembly costs — and catch the parts that don't actually clear each other.

*Costed BOM roll-up · auto-split multi-body files · placement-aware clearance*

AssemblyDFM costs a whole assembly, not a stack of separate parts: group the parts you've already priced into one named assembly and get a single costed BOM — the cheapest feasible route per part at your quantity, tooling counted once per part instead of once per quote, and a lead time on the real critical-path part, not the sum of every part's lead. Drop a multi-body STEP or 3MF and Partimation splits it into placed parts automatically, then screens the assembly for parts that overlap or sit closer than they should — before any of it reaches the shop floor.

- **One BOM** — group parts you've already analyzed into a single costed assembly
- **Critical path** — lead time on the longest part, not the sum of every part's lead
- **Auto-split** — drop a multi-body STEP, 3MF, or STL — no picking it apart by hand
- **Clearance check** — advisory interference screen on the real placement, before you cut

Free to start · no credit card · your files stay yours.

## An assembly quote shouldn't be a stack of separate guesses.

- **The assembly total nobody actually trusts** — Every part gets its own quote, but the roll-up happens by hand — tooling counted twice, lead time added up instead of taking the critical path, and the total you send is wrong in ways nobody can see.
- **Multi-body files get split apart one part at a time** — A supplier's STEP or 3MF carries the whole assembly, and someone still pulls it apart body by body — renaming parts and counting duplicates by hand before any of it can be analyzed.
- **Nothing checks the fit until it's on the bench** — Whether mating parts actually clear each other is usually discovered after everything's been cut, cast, or machined — not on the model, before you commit to it.

## One costed assembly, split automatically, checked for fit.

- **Straight from your library — Turn parts you've already analyzed into one named assembly** — Group any parts already run through Partimation into a named assembly with per-part quantities — no re-uploading, no separate assembly tool to learn.
- **Total it honestly — One costed BOM roll-up, not a stack of separate quotes** — The cheapest feasible route per part at your assembly quantity, tooling non-recurring cost counted once per part rather than once per unit, and a lead time on the critical-path part — not the sum of every part's lead.
- **Drop the whole file — Multi-body STEP, 3MF, or STL splits itself** — Upload a file carrying the whole assembly and AssemblyDFM proposes the distinct placed bodies, collapsing identical duplicates into a quantity — review, rename, or exclude before anything gets sent through analysis.
- **Catch it before it's cut — Advisory clearance and interference, on the real placement** — A coarse geometric screen over the assembly's actual relative placement flags parts that overlap or sit closer than they should — advisory, not a mating solver or a tolerance stack-up, and every finding says so.

## From a pile of parts — or one file — to a costed, checked assembly.

1. **Build or drop an assembly** — Group parts you've already analyzed into a named assembly, or drop a multi-body STEP/3MF/STL and let it propose the split.
2. **Review the split** — Rename, exclude, or adjust quantities on the proposed bodies before anything gets analyzed — nothing runs unreviewed.
3. **Get the costed BOM** — See the cheapest route per part at your quantities, rolled into one assembly total with a critical-path lead time.
4. **Check clearance** — Run the advisory interference screen on the real placement and catch collisions before you commit to tooling.

## Start free. Upgrade when it's winning you work.

Priced for a one-person shop and a multi-part production line alike. Analysis and BOM roll-ups are unmetered — build as many assemblies as you like.

| Tier | Price (EUR / USD / GBP) | What you get |
| --- | --- | --- |
| Free | €0 / $0 / £0 | 10 parts a month; DFM findings + best-fit process; Advisory analysis, draft resolution; No credit card |
| Pro | €199 /seat · mo / $199 /seat · mo / £169 /seat · mo | Unlimited parts, full resolution; Should-cost, reports, exports; Process selection, routing, DFM across processes; 30 simulation runs a month |
| Shop | €699 /mo · 5 seats / $699 /mo · 5 seats / £595 /mo · 5 seats | Everything in Pro; Your shop's rates & cost model; Quote calibration + API access; 150 pooled simulation runs a month |
| On-prem | €15k yr 1, then €10k renewal / $15k yr 1, then $10k renewal / £12.5k yr 1, then £8.5k renewal | Runs on your hardware; Unlimited simulation, no metering; Signed updates, never phones home; 10 seats · optional device lock |
| Enterprise | from €25k / from $25k / from £21k /yr | Multi-site licensing, custom processes and rules, a model tuned on your own quote history, and an SLA. |

EUR and GBP prices exclude VAT, added at checkout where it applies. Early adopters keep their price as the suite grows.

## In the cloud by default. Behind your firewall when it has to be.

- **Cloud — Nothing to install** — Sign in and cost an assembly from any browser. We run the compute, ship the updates, and keep your files yours — the shared model only ever learns from your own jobs to calibrate your rates.
- **On-prem & air-gapped — For assemblies that can't leave the building** — Aerospace and anyone under NDA can run the whole thing on their own hardware. Licenses and updates are signed files — it never phones home, so an air-gapped install stays air-gapped.

## Frequently asked questions

#### How do I cost a whole assembly instead of adding up separate part quotes?

An assembly rolls up into one costed BOM: the cheapest feasible route per part at your assembly quantity, tooling non-recurring cost counted once per part, and a lead time on the critical-path part. A roll-up built by hand does neither — tooling gets counted again on every quote it appears in, and lead times get added up when they should have run in parallel.

#### Can I drop in one multi-body file, or do I have to split it up first?

A multi-body STEP, 3MF, or STL gets split into placed parts automatically, with identical duplicates collapsed into a quantity. The split comes back as a proposal, not a result: rename a body, exclude one, adjust the quantities, and nothing goes through analysis until you have accepted what the file actually contains.

#### Will it tell me if two parts in the assembly interfere?

A coarse geometric screen over the assembly's real relative placement flags parts that overlap or sit closer than they should. The screen is advisory, and it is not a mating solver or a tolerance stack-up — every finding says so on its face. Catching an overlap on the model still beats catching it on the bench with everything already cut.

#### Does it spot parts that could share tooling?

Parts in the same assembly that share a casting family and alloy get flagged as a shared-mold opportunity on the BOM. The flag is a hint for a tooling conversation and nothing more — what it tells you is that two line items on the same BOM are already asking for the same kind of tool.

## Related pages

- [PartDFM](https://partimation.com/part-analysis/)
- [CostDFM](https://partimation.com/costing/)
- [RouteDFM](https://partimation.com/routing/)
- [DocDFM](https://partimation.com/documents/)
- [In-house or send it out? Price the step instead of arguing about it](https://partimation.com/solutions/make-vs-buy/)

## Put your next assembly through it.

Cost a real multi-part job free in your browser, or book a walkthrough set up for your parts library and your shop's rates.

## Tell us about your assembly.

We reply within one business day.

> Partimation is decision support, not a guarantee — every roll-up line names the rule behind it, and the assembly clearance check is a coarse geometric screen, not a mating solver or a tolerance stack-up. Validate fit against your own assembly practice before you commit tooling.