Catch it on the print.
Not on the machine.
The 3D Drawing Checker reviews each drawing before your first design review. It checks the PDF against your drafting standard, ASME Y14.5 and ISO GPS, marks every finding on the sheet with the rule behind it, and builds the part in 3D from the print. No CAD model needed.
Pick 5 of your drawings and get them back checked within 72 hours. Always free, and under a mutual NDA.
Found at the machine shop, it's a problem report. Found at your desk, it's a fix.
What an engineer gets from the 3D Drawing Checker: findings on the sheet, each one naming its standard, and the part in 3D. Captions are on, so it works with the sound off.
Your first design review shouldn't start from a blank drawing.
Your PLM and ERP store the drawing. Neither one reads it. Geometry, GD&T and callouts go to the supplier checked only by people, and the gaps come back as redlines, ECNs and calls from the shop floor.
At most companies a part goes through more than one review before release. The first one is about the drawing itself: your drafting standard, completeness, notes, the title block. Doing it properly takes senior engineers who know your parts, reading every callout on every sheet.
The 3D Drawing Checker runs before that review. Your checkers start from a marked-up drawing instead of a blank one, and spend their time on the findings that need judgment. During a ramp, that's the difference between a review queue and a backlog.
The drawing itself
Drafting standard, completeness, dimensions, notes, title block.
The design
Function, fit, manufacturability, risk.
Sign-off
Before the part goes to suppliers.
Built for semiconductor and precision capital equipment · medical and analytical instruments · aerospace and defense · power generation · robotics and automation · heavy equipment
Made for engineering standards managers, chief drafters and CAD/PLM admins · design engineers, sustaining and NPI leads, and checkers · engineering leaders who own release schedules
What it flags. Real examples from the demo runs.
Dimensions and scale
It pairs every dimension with the lines it belongs to and works out the scale from the geometry. A chain of 30 + 50 + 55 + 30 on a part dimensioned at 160 gets flagged. So does a title block that says 1:2 on a sheet drawn at 1:1.
Callouts against the views
4X on the note and three holes in the view. Hole counts, thread callouts and features are checked against what is actually drawn.
GD&T and datums
A datum named in a note instead of with a datum feature symbol. Close-tolerance dowel holes with no position control. Raised as review findings, for an engineer to confirm.
Title block, material, finish
An empty material cell. Black oxide with no spec. A cancelled spec like MIL-A-8625, which has been replaced by MIL-PRF-8625.
Threads and notes
An inch thread like 1/2-13 UNC with no class of fit. Typos in the notes, in English and in German: SURFCAE, or GESCHLIFEN where it should say geschliffen.
Your own drafting rules
In the proof of concept your internal drafting standards are loaded too, so every finding says whether it came from your rules or a global standard. How that works →
We planted 8 mistakes in 7 test drawings. It flagged all 8.
A small test on drawings we made ourselves, metric and inch, German and English, so read it as a smoke test, not a guarantee. 5 were caught by code, and 3 were raised as review findings for an engineer to confirm. Your own five drawings are the real test.
Why the findings hold up
Measured by code.
Units, scale, dimensions, hole counts, the title block. These are measured, not guessed, so the same drawing gives the same measured findings every time you run it.
Reviewed zone by zone, like a second engineer.
Views, sections, GD&T frames, finish symbols, notes and the revision block each get their own review.
Checked again by code.
Every claim the review makes has to point at something on the sheet. If code can't find it, the claim is dropped. What code can't confirm is marked possible, for an engineer to decide, never stated as fact.
Anything it couldn't read or check is listed as not checked. It never goes quiet and lets you assume a sheet passed.
5 of your drawings, checked free, back in 72 hours.
Judge it on your own parts. It starts with a conversation, not a file upload, and there's no slide deck or sales cycle to sit through.
Tell us you're interested
Reply to our email or write to us. Most teams talk to their legal team before any drawing leaves the building, and we'll work through that with you.
Pick your 5 nastiest prints
We sign a mutual NDA with your legal team and agree how the drawings are shared. If one has a mistake you already know about, include it. That makes it a blind test.
Back in 72 hours
Every sheet marked and cited, with suggested fixes and the 3D models. Checked against ASME Y14.5 and ISO GPS, and your own drafting standard if you have it ready. Always free.
Then run it yourself
If you like what you see, your team gets its own login, loads your internal drafting standards and runs your own drawings.
Opens an email to contact@sourceoptima.com with the request filled in. You don't need to attach drawings: most teams set up the NDA with their legal team first, and we'll work through that with you.
Your drawings stay yours
- Single-tenant. Your own instance, on SOC 2 Type II and ISO 27001 audited infrastructure.
- Stored with you. In the usual setup your drawings and the results stay in your environment; we host the application.
- Nothing kept, nothing trained. We don't keep your drawings, and nothing is ever used for training.
- ITAR. Export-controlled drawings can be processed in your own cloud or on our air-gapped setup.
A PDF goes in. A checked drawing and a 3D model come out.
No PLM or ERP integration. It works on the drawings you already release.
Upload
A PDF drawing exported from your CAD system. Metric or inch, English or German.
Read
Lines, title block and notes. Units and scale are worked out from the drawing, not assumed.
Check
Code measures. SourceOptima AI reviews the sheet like a second engineer. Code checks every citation it makes.
Build in 3D
The part is built from the print's own linework and exported as STEP.
Report
Every finding boxed on the sheet, cited, with a suggested fix. On screen, on your phone, or as a PDF.
The review starts from the drawing. So does the checker.
Most checking tools want a 3D model first. But the drawing is what goes to the supplier, and the first design review has always started from a PDF.
- 3D from the print. The checker builds the part from the drawing's own lines, so you see what the drawing actually describes, and where it doesn't add up.
- Resolve in 3D. Open a finding and the suggested fix is shown on the model, before anyone touches the print.
- Clear about confidence. Each model shows how much of the drawing's linework it accounts for. Where the drawing leaves something open, you get a question, not an accusation.
Every finding names its standard. Yours, or the world's.
Your own drafting rules are usually the ones nobody has time to check on every drawing.
In the proof of concept your team gets its own login. Load your internal drafting standards into the Internal Drafting Standards Library (O-ring grooves, title blocks, sheet metal, anodize, paint, packaging) and every drawing is checked against them, alongside ASME Y14.5 and ISO GPS.
- Switch rules on and off. Each standard in the library is a toggle, applied to every drawing.
- Cited, every time. Each finding says whether it came from your internal standard or a global one.
- One standard across every CAD system. It reads the released PDF, so it doesn't matter which CAD system or which acquired library the drawing came from.
- Fix, re-check, green. Fix the drawing, run it again, and walk into design review with a drawing that already meets every standard.
FAQ
Does this replace our drawing checkers?
No. It runs before a human checker opens the file and takes the tedious part off their plate: standard compliance, completeness, the title block, the notes. Your checkers spend their time on the findings that need judgment.
Where do our drawings go, and who sees them?
Each customer gets a single-tenant instance on SOC 2 Type II and ISO 27001 audited infrastructure. In the usual setup your drawings and the results are stored in your own environment and we host the application. We don't keep your drawings, and nothing is ever used for training. Export-controlled (ITAR) drawings can be processed in your own cloud or on our air-gapped setup. For the free sample, most teams bring in their legal team first. We sign a mutual NDA and agree how the drawings are shared before anything is sent.
Will it flag things that aren't wrong?
Sometimes. Measured findings are repeatable. Anything code can't confirm is marked possible, for an engineer to decide, and anything it couldn't read is listed as not checked. The sample shows you the ratio on your own drawings.
We already have checking tools in SolidWorks or Creo.
Those check the CAD model. The drawing is what goes to the supplier, and that's where callouts, notes, tolerances and the title block drift away from the model. That is what this checks.
Can it check against our own drafting standard?
Yes. Your standards are loaded into the Internal Drafting Standards Library and checked alongside ASME Y14.5 and ISO GPS. If yours are ready, we include them in the sample. If not, no problem: the sample is checked against ASME Y14.5 and ISO GPS, and your standards are loaded for the proof of concept.
What does it cost?
The 5-drawing sample is free. If you want to go further, the next step is a paid proof of concept: your team gets its own login, loads your internal drafting standards and runs your own drawings. We scope it with you after the sample.
Do we need to connect it to PLM or ERP?
No. It works on the PDF drawings you already release. Nothing to integrate to get started.
Which drawings work best?
PDFs exported from your CAD system, metric or inch, in English or German. Scanned images aren't read yet. If a sheet is a scan, the report says so instead of guessing.
What about assemblies and weldments?
The drawing is still checked. The 3D build focuses on single parts such as plates, turned parts and sheet metal (built flat), and the report tells you when it doesn't expect a single solid.
The Drawing Checker is where it starts.
Every SourceOptima module reads the same thing: your engineering drawings. Once they're read, the same data runs your supply chain and trade decisions too.
Catch it on the print.
The 3D Drawing Checker runs before your first design review, against your drafting standards plus ASME Y14.5 and ISO GPS, and builds the part in 3D.
For engineering → Supply chainSavings surfaced from your own drawings.
The same drawings, read at scale and joined to your purchase history. Genuinely alike parts are grouped across sites, so you can consolidate suppliers and negotiate from your own purchase lines.
For procurement → TradeClassify from the drawing. Defend it in the audit.
An assembly becomes a tariff code per component, with the landed duty cost and the rationale documented for your broker.
For trade →We ask for nothing you don't already produce: the drawings, a purchase export, the paperwork your broker already has.
See the whole platform →