Purchasing Guides / Assembly Work Instruction Drafting

Assembly Work Instruction Drafting

A purchasing guide to buying a workflow that turns your approved parts list, build notes and images into assembly instructions for an engineer to review.

Yearly running cost

Assuming 1,200 instruction packs a year

By hand
$81K / year
1,800 hours of work
Subscription
Quote needed
This workflow
$78 / year
Machine usage only; setup, hosting and review are extra.
What should it turn into assembly instructions?

Create illustrated steps from your approved parts list, build sequence, requirements and images.

One instruction pack includes up to 20 assembly steps and 50 parts-list lines and 10 source pages.

A manufacturing engineer approves every instruction pack before use. No invented torque values, materials, safety steps or assembly sequences. No automatic shop-floor release or equipment control.

What is included

Create editable assembly steps with parts, tools, supplied illustrations and required checks. Link each instruction to its source and flag missing or conflicting details.

Supply a structured parts list, readable process notes and labelled photos or exported CAD views. The workflow drafts steps and identifies missing information. It does not derive safe assembly sequences from raw geometry or invent process settings.

Supplied step images: up to 6 images.

Starting scope: up to 1 assembly family.

How accurately should the draft reflect your build pack?

Useful instructions include the right steps, preserve the technical details and make missing information obvious.

How these standards are measured

Test on held-out assemblies and revisions reviewed by a manufacturing engineer. Check required steps, exact part and process details, source versions and changed requirements. Critical omissions or invented specifications block release, even when an average score passes.

Targets for your selected standard
What is checkedTarget
Required steps includedCorrectly included steps divided by all engineer-labelled required steps. Missing, deferred and incorrectly ordered steps remain failures; critical omissions block release regardless of the average.≥95%
Technical details correctCorrect emitted part IDs, quantities, tools, process values and units divided by all emitted technical details. Check against the approved source, not model plausibility; unsupported specifications fail release.≥99%
Current source referencesEvery drafted step links to the correct source version and any supplied image it uses. Preserve variant and revision identifiers; a link to an outdated drawing does not pass.≥100%
Changed requirements flaggedCorrectly identified affected steps divided by all engineer-labelled affected steps in held-out revision pairs. Includes deleted parts and changed checks; report false change flags separately.≥95%
Change flags correctSupported affected-step flags divided by all emitted change flags. Unchanged-step pairs are included so marking every step as changed cannot pass.≥90%

Critical omissions, wrong revision context or invented process values block release. Keep approved sequencing and units; engineering review is required even when the numerical targets pass.

How quickly do you need the draft?

Choose how quickly an instruction pack should be ready for review. Engineering approval and shop-floor trials are separate.

Timing details

Measure from complete approved inputs to a stored, editable draft, including parsing, queueing, model calls, retries and export preparation. A revision draft is another run.

The target applies to at least 95% of agreed test runs, with 2 in progress at a time.

How much do you want to spend per instruction pack?

Choose the machine budget for drafting steps, linking sources and checking the instructions.

Cost details

Includes model calls, retries and shared hosting at the stated volume. Engineering review, source preparation, document-system subscriptions and the calling agent are separate.

Reference machine cost: $0.26 – 0.66 per instruction pack at 100 instruction packs a month. The selected cap is a target to test, not a replacement for this estimate.

Where do you want it to run?

Run in your cloud or on your own server. Choose whether approved build text can go to an external AI model.

Data and access details

Runs in a cloud account you control, with access controls and logs.

Only approved build text goes to the selected external model. Agree access and retention before processing.

Use only authorised design and process data. No external calls uses local files and private inference, without a live document-library connection.

How do you want to use it?

Use a review web page, your existing AI agent or a dedicated instruction-drafting agent.

Anything else your provider should know?

Optional. Your choices are included automatically.

Common questions

When is a manufacturing platform a better choice?

Use one when you need CAD-derived assembly planning, collision checks, line balancing or production execution. This workflow prepares and revises instructions from build knowledge you have already approved.

Can it work directly from CAD?

It can include labelled views exported from your CAD system. Automatically interpreting geometry, planning a sequence or producing animations requires separate tools and scope.

What happens when a drawing changes?

The workflow highlights affected steps and creates a review draft. Your engineer confirms the revision and approves the updated instructions before anyone uses them.

Can I ask for a different document format or language?

Yes. Agree the template, translation review and acceptance examples with your provider. The baseline is an English-language pack using supplied images.

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