In the time before CNC technology, items like these were produced by skilled craftspeople. This hands on approach took a lot of time and was often not very accurate. There was the potential for errors and variations - it was difficult to recreate a product exactly as every step had been done before. CNC machines are making production processes more efficient as they can produce products in a repeatable way without any error, which save time and confirm all is ok.
CNC production is using computer control to convey precisely what they have got todo occasion with all the devices. The computer transmits a unique recipe to the machine, for which then that machines produces said product as required. This is very efficient as the computer can send precise instructions about what turns and movements to make, which in turn will be easy for a machine to comprehend.
