Define visible surfaces
Mark areas visible in the finished product. Discuss gloss, texture and permitted machining marks. A physical sample helps assess the desired appearance together.
Distinguish colour from appearance
Colour alone does not define gloss or texture. Alongside a RAL or sample colour, specify the desired appearance. Material and pre-treatment affect the result.
Allow for fits and coatings
Coatings can change dimensions. Threads, sealing surfaces and contact points may need masking or subsequent machining. Show these areas on the drawing.
Use a sample as a shared reference
For repeat parts, an approved sample supports coordination. Record material, pre-treatment, colour and surface finish together so the agreed version remains traceable.
These tips help prepare your project. Specific production details and required evidence are agreed for your part.
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