na-adjective, noun
diligent; industrious; skillful with one's hands
Describes a person who is good with their hands, works steadily, and is not lazy about manual tasks. Often used for someone who is handy around the house or meticulous in craftwork.
彼は手まめで、家の修理は何でも自分でやってしまう。
He is so handy that he does all the house repairs himself.
手まめな人は、細かい作業も苦にしない。
A diligent person doesn't mind detailed work.
Compound of 手 (hand) and まめ (diligent, healthy). The exact origin of まめ is uncertain, but it may be related to the idea of being sound or sturdy.