full scratch building; making from scratch
Wasei-eigo term used especially in model-making, DIY, and information systems to describe building something entirely from basic components without using pre-made parts or frameworks.
wasei-eigo (Japanese-coined English), from full scratch
This plastic model was built completely from scratch.
He developed his own OS from scratch.
Variant spelling with a middle dot; less common but seen in some contexts.
Wasei-eigo derived from English 'full' and 'scratch', modeled on the phrase 'from scratch'. The exact origin is uncertain, but it likely emerged in hobbyist and technical circles in Japan.