Lesson 01
Define the job
State the service before viewing products.
Write a one-sentence outcome, then define area, viewing distance, duration, handling and location. Separate mandatory conditions from preferences.
For a reception poster, the outcome may be one readable message for eight weeks in a retained frame. The material decision should include the frame fit and actual replacement method.
Read the practical guidePractice task: Write three mandatory requirements and three preferences for one real upcoming graphic.
Lesson 02
Describe the assembly
Follow every component into the record.
List substrate, ink, finish, adhesive, mount and support. A material family is useful for discovery; an exact variant is needed for evidence.
When a supplier substitutes a finish, create a new version and identify which earlier statements need rechecking.
Read the practical guidePractice task: Create a six-component bill of materials; mark each unknown rather than guessing its identity.
Lesson 03
Compare the same outcome
Align scope before choosing.
Use the same service period and number of deployments for each feasible option. Include replacement and retained components.
Show performance, material quantity, sourcing, repair and recovery as separate dimensions. Missing information is not a favourable result.
Read the practical guidePractice task: Compare two feasible constructions. Identify one unknown that could change your decision.
Lesson 04
Ask the supplier
Request information that resolves a decision.
Ask for exact variant data, supported use, evidence scope and the delivered construction. Keep a dated response.
A trial can answer a handling question; a fire rating or structural approval requires appropriate evidence and competence.
Read the practical guidePractice task: Draft a request for the most important missing detail and explain why it matters.