Science, Maths & Technology
Photochemical Machining (Photo-fabrication; Chemical milling)
...free components, unlike fine blanking. Difficult to produce parallel-sided holes due to the “undercutting” effect of the etchant. Tapered and rebated holes (impossible by fine blanking) produced using asymmetric photo-master. Process rounds off internal and external corners. This can be minimised by careful design of photo-masters, but can be an advantage as it...