Design Drawing Requirements
A drawing is not paperwork. It is the reference used to quote, build, inspect, and reorder your part.
This page shows what a production drawing should include, what each construction requires, and which omissions can add another revision cycle. Start with what you have.
What You Can Send Us.
You do not need a finished engineering drawing to begin. Each input below moves you further before sampling, and even the lightest one starts the conversation. What you provide determines how many questions come back.
A Complete Dimensioned Drawing
Overall dimensions with tolerances, material, finish, colors, attachment, and a revision block. The complete reference.
A Dimensioned Sketch or Annotated Photo
A hand sketch, CAD sketch, or photo showing the measurements that define fit and appearance.
A Physical Reference Sample
An existing part we can measure and document when no drawing exists or the geometry is difficult to define.
A Reference Image With Known Dimensions
A photo of a similar part plus overall size and any known constraints. The lightest start, enough to scope, not to build.
Anatomy of a Complete Drawing.
Most projects do not require all, or even most, of the items below. You can begin with whatever information you have. Each applicable detail defined on the drawing or in a controlled referenced file reduces assumptions, follow up questions, and revision cycles, helping us quote, prepare the drawing, and move toward an approved sample faster.
Overall Dimensions
Fixes the part envelope before tooling or production setup begins.
Views & Cross Sections
Reveals relief, recesses, thickness changes, and backside features a flat view cannot show.
Units, Tolerances & Critical Dimensions
Defines what production and inspection must hold without over specifying features that are not critical.
Datum References
Keeps holes and features positioned to the same origin as the receiving part.
Corner and Edge Treatment
Determines fit into a recess and how the part feels in hand.
Material & Thickness
Determines durability, weight, cost, and compatible production processes.
Surface Finish
Sets appearance and how the surface holds up to handling and environment.
Protective Layer
Determines whether graphics survive abrasion, chemicals, and UV in service.
Vector Artwork
Keeps logos and line work crisp at the required size without raster pixelation.
Artwork Placement & Orientation
Prevents correct artwork from being reproduced in the wrong position or orientation.
Color Callouts
Defines the intended color standard instead of leaving color selection to interpretation.
Text and Part Marking
Builds traceability into the part instead of adding it after the fact.
Attachment Method
Defines the rear construction and mounting method before the sample is built.
Hole and Feature Locations
Determines whether the part lines up with the surface it mounts to.
Mounting Surface Requirements
Confirms the attachment method will actually hold in the real installation.
Title Block & Drawing Identification
Ensures quoting, sampling, production, inspection, and reorders all use the same controlled document.
Revision Block
Makes the approved version unambiguous when a reorder lands a year later.
Referenced Standards & Approval Records
Connects the drawing to the exact references production and inspection must follow.
Dimensions & Tolerances.
A dimension defines the target. A tolerance defines the acceptable variation. Tighter is not automatically better. Unnecessarily tight tolerances can increase tooling, inspection, production time, and scrap. Apply tighter tolerances only where fit, alignment, or function requires them.
Establish a general tolerance appropriate to the material, construction, and part size. It governs dimensions without an individual callout and keeps tighter controls focused on the features that need them.
Apply tighter tolerances to the features that control fit, mounting, alignment, or function. These are the dimensions production and inspection should prioritize.
Reference related dimensions and feature locations to a common datum or datum system. This reduces accumulated variation and keeps mating features aligned to the same origin.
Thin metal components and large overlays can bow. Specify flatness when the part must sit evenly against a surface, fit within a frame, or maintain consistent contact.
Each process controls a different characteristic. What is achievable depends on the process, material, and geometry of your part.
| Process | What is controlled | What affects it |
|---|---|---|
| Chemical or photo etching | Profile, holes, slots, and feature dimensions | Material type, thickness, feature size, and etch factor |
| Screen printing | Color-to-color and print-to-part registration | Screen tension, fixturing, geometry, and substrate stability |
| Digital printing | Print-to-substrate registration | Equipment, substrate stability, file setup, and part size |
| Embossing | Relief height and alignment to printed or formed features | Material, thickness, tooling depth, and geometry |
| Die casting | Finished dimensions, feature locations, parting-line effects, and draft | Alloy, part size, shrinkage, tooling, and geometry |
| Overlay print-to-cut | Printed artwork alignment to the finished cut profile | Substrate, printing method, cutting method, and registration controls |
Numerical tolerances are established during drawing review based on the material, process, geometry, and features critical to the application. The approved drawing governs production and inspection.