Friday afternoon, the first delivery from the external drafting agency comes in: forty files, neatly on time. On Monday your senior engineer opens the folder. Different title block, their own templates, empty iProperties, file names like "cover_final_B2.ipt". The work is not bad, it just does not fit anything. The two weeks outsourcing was supposed to save largely evaporate into rework.
It does not have to go that way. Outsourcing CAD work works fine, but the quality of what you get back is largely determined by what you hand over up front. This article shows how to make an external agency or contractor deliver as if they were your own drawing office: with an intake package, firm metadata agreements and a fixed check on delivery. A toolbox like Thundercad makes that check in particular a lot lighter.
Why the first delivery so often disappoints
A drafting agency works for ten customers with ten different standards. Without a clear framework they pick what they always do: their own templates, their own layer conventions, their own naming habits. That is not unwillingness but logic; your standard is one out of ten to them.
The bill arrives on receipt. As an assumption, count fifteen minutes of rework per drawing for moving it onto your own title block, filling iProperties and renaming files. With forty drawings that is well over a full working day, done by exactly the engineer outsourcing was meant to relieve. Every agreement you pin down in advance cuts straight into that loss.
The form you choose matters here. A contractor placed inside your team works in your environment, with your templates and your rules within reach; for them the intake package is mostly an onboarding document. A drafting agency works on its own systems, out of your sight, and there the same package has to do the correcting you would otherwise do while walking past. The further away the work happens, the more weight the agreements have to carry.
The intake package: one folder that says it all
With the first assignment, send along a package that lets the external party rebuild your environment. Complete does not have to mean big; it is about the points where they would otherwise improvise:
- your Inventor templates for part, assembly and drawing, including the title block;
- your style library: dimension styles, text heights, hatching;
- the naming convention for files and the folder structure per project;
- the list of iProperties that must be filled, with spelling and examples;
- a finished example project of a handful of parts: this is what good looks like;
- one page with your key drawing office agreements, from projection method to weld symbols.
If those standards are not sharp on your own side yet, that is the first job; we described a pragmatic approach in Standardizing in Inventor with a small team. Everything you leave open, an external agency will fill in as they see fit.
Metadata agreements: the part you cannot see on the print
Visible drafting quality is usually not the problem; external drafters can draw. It is the invisible part that goes wrong: iProperties such as part number, description, material and revision. Those fields feed your title block and your BOM, and flow on to ERP and purchasing. Leave them empty and the delivery looks complete while the real work still has to start. Also record who fills which fields once your own team picks up the work afterwards: doubly filled fields are almost as annoying as empty ones.
So agree per document type which fields must be filled, in which language and in which spelling. Inside Thundercad, the iProperty Panel helps here: a configurable data card per document type that shows exactly the agreed fields. If the external party works with the same card, they see the same list as your own people and nothing stays empty unnoticed. Either way, include the field definition in the intake package, even if the agency works with different tooling.
Checking metadata does not have to mean clicking through file after file: with a data card per document type you see at a glance what is filled and what is not.
Try 30 days freeChecking deliveries: a checklist instead of gut feeling
Judge every delivery on the same points, in the same order. A fixed checklist makes the check transferable and the feedback concrete:
- The main assembly opens without errors or broken references.
- Files sit in the agreed location and follow the naming convention.
- The agreed iProperties are filled, in the correct spelling.
- The BOM is right: quantities, manufactured versus purchased parts, materials.
- Drawings follow your standard: views, sections, dimensioning, title block.
Go through the first delivery in full and discuss every deviation. After that you can move to spot checks per delivery; find something, and you widen the spot check again. Keep a simple error list per category: it doubles as the agenda for the evaluation meeting. Also agree on what happens with rejected points: does the agency fix them within the assignment, or does your team take them on? Without that agreement, every error still ends up on your own drawing office's plate.
From one-off job to flexible shell
The biggest gain is in repetition. Treat the external party exactly like your own drawing office where standards are concerned: the same templates, the same agreements, the same checks. Update the intake package whenever something changes, and treat every question from the agency as a gap in your documentation: answer it and close it.
Plan a short evaluation after each delivery, based on the error list. Agencies that take their trade seriously work that feedback into their own instructions and deliver visibly tighter the second time. That is how a supplier grows into a flexible shell you can scale up at busy times without a ramp-up. Onboarding your own new colleagues is a different story with different means; we covered it earlier in Onboarding a new engineer: from three months down to three weeks.
Frequently asked questions
How much time does a good intake package take?
With existing standards it is mostly gathering: putting templates, styles, the naming convention and an example project together takes an afternoon. If the standards still have to be written, count a few days spread over a few weeks. That investment pays off internally too, every single day.
What if the external party does not work with Inventor?
For loose detail drawings, exchange via STEP and DXF can work, but you lose the parametric structure and the iProperties, and with them the fit with your own environment. For structural drafting work on your own machines, the same CAD environment is a reasonable and common requirement.
How do I keep up the checks when things get busy?
Keep the checklist short and the tooling fast: a data card that immediately shows empty fields saves most of the searching. Spot checks earn their keep precisely in busy periods. You can try the iProperty Panel and the rest of Thundercad free for a month on a real delivery.