[HansardExpert]

They are both equivalent. Scratch-built is perfectly cromulant.

My father used to talk about 'Scratch-building' his WWII dioramas and model vehicles/tanks. While you could use a phrase like 'Scratch-cooked' rather than cooking from scratch, I've never heard but someone would not think the former meant something different to the latter.

[woleium]

I see what you did there. (cromulant was coined in a Simpsons episode)

[tracker1]

I've heard "scratch-made" applied to cooking before.