Check what actually needs replacing
Start by identifying the component and the problem it causes. Is it a cosmetic cover, a locating clip, a control button or a part that carries a load? Note the equipment make, model and any markings. Check whether a genuine spare or a compatible standard component is available first. A custom replacement is most useful when the part is difficult to obtain, or when an agreed change is needed for the application.
Keep the broken pieces
An incomplete original can still show wall thickness, fixing positions, internal ribs and the shape of a mating surface. Keep the fragments together, including small tabs and inserts. Photograph the damage before attempting repairs that could obscure those details. If there is a matching undamaged component elsewhere on the equipment, include it as a reference. Missing geometry may be established from that matching part, measurements or other information, depending on the job.
Show the fit, not just the front
A replacement can look right from the outside and still fail to fit. Show the reverse, screw holes, clips, locating features and the surrounding equipment. A button may locate on a particular shaft; a cover may need to clear a moving part; a housing may depend on its internal ribs. Photographs help identify those features, while the actual design may require measurements or the original part. Include a ruler for scale, but avoid treating a perspective photograph as a dimensioned drawing.
Explain the working conditions
Tell the maker about heat, sunlight, water, oils, chemicals, movement, wear and loads. Explain what happens if the component fails. A shape recreated in plastic does not automatically have the properties of the original moulded or metal part. Material and manufacturing choices need to be considered for the intended use. If the application involves safety, pressure, electrical protection or other critical requirements, identify them at the start so the scope and suitability can be discussed.
What reverse engineering adds
Reverse engineering works back from the available part and references to establish the geometry needed for a replacement. The work can include recreating a CAD model and resolving damaged or missing details. It is more than taking an outline and printing it. For example, the Northern Power Electric housing project shows both the outside shape and internal features, while the Fender amplifier project shows the small replacement buttons alongside the fitted controls.
Agree design, manufacture and postage
At Copy & Replace, start with photos and a description. Matthew discusses the information needed and whether an original should be sent. Design is usually quoted first, with an estimated manufacturing price. Any design fee is agreed and paid before design starts. After design, the final manufacturing price is confirmed before production is approved and paid for. Straightforward work may be quoted in full at the outset. Postage is additional unless separately included in the quote, so confirm arrangements before sending an original.
If the original part is completely missing
Photograph where it belongs and explain what it needs to connect to, cover or operate. A matching component, an older photograph, a drawing or measured interfaces may provide a starting point. There may be too little information to reproduce an exact original, in which case an agreed new design or another solution may be discussed. Sending an enquiry is a way to assess that possibility, rather than a promise that every missing part can be recreated.