Shop drawings turn a designer's intent into instructions a workshop can build from. Here is what they are, what they include, and how they differ from design drawings.
IN SHORT
- Shop drawings are detailed drawings that show exactly how an item will be made and installed.
- They are produced by or for the fabricator, from the design drawings, and approved by the designer before production.
- For joinery they include dimensions, sections, materials, hardware, cut lists and fixing details.
A designer's drawing shows what a kitchen, reception desk or store fixture should look like. A shop drawing shows how to build it. It is the bridge between design intent and the workshop, and it is where most fit-out problems are either prevented or created.
What is a shop drawing?
A shop drawing is a detailed drawing prepared by, or for, the fabricator or contractor. It shows exactly how an item will be manufactured and installed: every dimension, joint, material, finish and fixing. It is submitted to the architect or designer for approval before production starts.
Shop drawings vs design drawings
| DESIGN DRAWINGS | SHOP DRAWINGS | |
|---|---|---|
| Purpose | Show what should be built | Show how it will be built |
| Prepared by | Architect or designer | Fabricator, contractor or their drafting partner |
| Level of detail | Overall form, finishes, key sizes | Every part, joint, fixing and hardware item |
| Used by | Client, planners, contractors | Workshop, CNC operators, installers |
| Approval | Issued for construction | Submitted for the designer's approval |
What joinery shop drawings include
- .01Plans, elevations and sections at a workable scale
- .02Overall and detailed dimensions, checked against site measurements
- .03Carcass construction and joint details
- .04Materials, board thickness, veneers and finishes
- .05Hardware schedule: hinges, runners, handles, lighting
- .06Fixing and installation details, including scribes and tolerances to walls and ceilings
- .07Cut lists, and CNC-ready files where the workshop uses them
The approval process
Shop drawings usually go back and forth. The designer reviews them and returns them marked approved, approved with comments, or revise and resubmit. Only approved drawings should go to production. Keeping revisions clear on every sheet avoids building from an old version.
THE COSTLY GAP · DESIGN DRAWINGS RARELY SHOW SCRIBES, FIXINGS OR SERVICE CUT-OUTS. SHOP DRAWINGS MUST, OR THE INSTALLER WILL GUESS.
Why good shop drawings save money
Every question answered on the drawing is one less phone call from site and one less panel recut. Clear shop drawings mean faster approvals, fewer workshop errors and installations that go in first time.
Who should produce them?
Many joinery workshops produce shop drawings in-house, but drafting time often becomes the bottleneck in busy periods. Outsourcing shop drawings to a team that works in AutoCAD, SWOOD or iMOS lets the workshop keep building while drawings move through approval.
Questions people ask
What is the purpose of shop drawings?
To show exactly how an item will be made and installed, so the designer can approve it and the workshop can build it without guessing.
Who prepares shop drawings?
The fabricator, contractor or subcontractor, or a drafting partner working for them. They are based on the architect's or designer's drawings.
What is the difference between shop drawings and construction drawings?
Construction or design drawings show what should be built. Shop drawings add the manufacturing detail: joints, fixings, hardware, materials and exact dimensions.
Who approves shop drawings?
Usually the architect or designer, sometimes with the client or main contractor. They return them approved, approved with comments, or for revision.
What software is used for joinery shop drawings?
AutoCAD is common for 2D shop drawings. SolidWorks with SWOOD and iMOS are widely used for 3D millwork and cabinetry, with cut lists and CNC outputs.