Dimensions, datums & fits
GeometryMark the critical features, threads and dimensions that affect assembly or function. Identify the reference datums and applicable tolerances.
GUIDE 03 / FILE PREPARATION
Define what matters.
Make it measurable.
A complete drawing makes the quotation basis clear. Identify the features, tolerances and inspection evidence you need so CK can assess the right scope sooner.
Drawing, Tolerance & Inspection Guide · Drawings, files & quotation requirements
01
Fewer clarification rounds.
Put the key requirements in the first enquiry.
02
A more accurate quotation.
Review geometry, material and scope together.
03
One shared reference.
Keep quotation, production and inspection aligned.
WHAT TO PROVIDE
More than a shape.
A shared acceptance basis.
Your CAD model shows geometry. The controlled drawing explains fit, function, surface requirements and the evidence needed to accept the finished part.
Roughness, finish & condition
SurfaceState Ra where needed. Define coating, polishing, colour, heat treatment or other surface requirements, including areas that must be protected.
Inspection & reporting
EvidenceAgree inspection points, sampling quantity, material certificates, photographs or reports before production. Include CMM requirements where applicable.
DRAWING CHECKLIST
A drawing that leaves less to interpretation.
A review checklist, not a new set of compulsory RFQ fields. State the items that apply to your part and agree the acceptance scope with CK.
01Part number & revision
02Units & dimensions
03Material & condition
04Critical tolerances
05Datums / references
06Threads & fits
07Surface requirements
08Inspection scope
Review where applicable: Material certificates where requiredCMM points and samplingReport formatProtected surfaces
A FINAL QUICK CHECK
Before you send.
Complete and consistent files help CK assess your part faster and prepare an accurate quotation. Use this checklist to catch missing details.
0 / 6 items checked — your own preparation check.
No files are uploaded here. Final suitability and quotation scope are reviewed by CK.
DETAILS THAT HELP
Less uncertainty.
A clearer next step.
A few practical points to help you prepare the right information. For a drawing-specific question, ask our team.
What cannot be understood from a 3D shape alone?
Critical fits, tolerances, datum references, surface roughness, material condition and inspection evidence may need an explicit specification. Do not assume that geometry alone communicates every acceptance requirement.
Should the drawing include a tolerance standard?
State the applicable standard and edition where your specification requires it, and identify any exceptions or individually controlled features. CK will review suitability for the part and process.
How should I request a CMM report?
Identify the features or inspection points, datum references, sampling quantity and any required report format. Agree the inspection scope before production rather than request an unspecified full report.
What if I am unsure how to define a requirement?
Describe how the feature is used and share the drawing with the CK team. We can clarify the manufacturing and inspection scope with you before the quotation is finalised.
CUSTOMER REVIEWS
Feedback from our customers.
In our customers’ own words — from part quality to delivery.
Direct messagePart quality
Your material have a really good quality
— 3D printing customer
Email feedbackIn use
The parts have already been assembled and I haven't received any complaints…
— Manufacturing customer
Direct messageDelivery
Everything was perfect
Good packaging
— 3D printing customer
Direct messageFuture projects
Don't worry about that, we have already verified the quality of your work…
— 3D printing customer
Direct messageEspañol
Nos gusta la calidad de ustedes.
Son nuestro mejor proveedor en cuanto a calidad.— Customer · Original Spanish
Direct messageProject requirements
The quality is fine, and in the case of these components, we didn't need very high precision, so it's all good.
— Manufacturing customer
Direct messageOrder feedback
Thank you very much once again for the quality of your work.
— Manufacturing customer
Direct messageEspañol
CALIDAD MUY BUENA LA DE USTEDES— Customer · Original Spanish
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Real messages shared directly with CK. Original wording retained; customer names, companies and order details withheld.
Portraits show CK staff, not reviewers. “CK contact” follows the conversation; “CK team” is a team representative, not an order-handler attribution. No star ratings or external verification implied.
Christina 
Cindy 
Kevin 
Zoe 
Jessica 
Alina 
Kenneth
Clear requirements.
One committed team.
Need help with a fit, tolerance, surface requirement or inspection plan? Contact any member of the CK team. We’ll help connect your drawing requirements with the manufacturing and quality scope for your part.
