Wiktionary
self-built
a. built by oneself, often from commercially available components
Usage examples of "self-built".
And she went on to tell me, very proudly, how they'd just now fished him out of an irrigation lake when his self-built boat had capsized.
They all hefted self-built muskets, in good condition, and all of them carried long daggers.
The river and time flowed ever faster, wider, draining the continent of willing minds, gliding people to safety, isolating others on self-built islands of hatred, until finally no new minds remained.