DJDevon Design JournalIdeas made tangible

Design foundations

A sketch should answer a question

Simple drawing can support a decision without pretending to be a finished design.

Devon Design Journal editorial · October 7, 2026 · 3 min read

A sculptural brushed-metal prototype on a softly lit design workbench.

Choose the conversation

A sketch may explore proportion, an assembly relationship or the space a user needs. Give it a specific purpose before adding detail. Include enough views to explain the idea and mark anything that is not yet resolved. Several rough alternatives can be more useful than one polished image if the team still needs to choose a direction. Appearance alone does not establish feasibility.

Keep the status clear

Date the sketch and label it as a concept rather than a fabrication instruction. Write down the decision it supported and the questions it left open. When sharing it, explain whether dimensions are illustrative or controlled. A concept drawing becomes misleading when someone assumes it is the latest approved specification. Preserve the learning while moving the agreed direction into the appropriate design documentation.

A practical review checklist

  • State the drawing’s purpose.
  • Label provisional detail.
  • Record the decision it supports.

Further reading

General design-planning material. Actual specifications, machine operation and safety decisions require suitable qualified expertise.