Need Chinese phrase that would mean "dedicated craftsman" for calligraphy piece

Question

I am a ten-year student of Chinese calligraphy and am thinking of creating a calligraphy piece that would mean "dedicated craftsman". I have not been able to find such a phrase in idioms or chengyu sources that I have.

Can someone suggest a short phrase (no more than five or six characters, not a sentence), that would work for this idea? This piece will be given to a professional film editor who refers to himself as a “dedicated craftsman”. He means that he has high standards for the quality of his work. He is not a hobbyist.

Thanks for help.

Answer 1

獨具匠心

It means exquisite workmanship with an ingenious design.

Answer 2

精益求精: already very good, but still endeavor to do even better

This chengyu is often used to describe craftsmen and technicians who have very high standards for their techniques and works.

匠人精神 or 工匠精神, literally "craftsman’s spirit". It describes craftsmen who are dedicated and have high standards. This phrase is very close to what OP says. However, this is not a chengyu, but a rather modern coinage.

Answer 3

八字評語 (eight-character comments) is very common in Chinese literature

You can use both idioms below

敬業樂業 - respect and dedicated to one's job

精益求精 - always seek improvement

you can combine the two and write: 敬業求精

or simply, 敬業匠人 - dedicated craftsman

Edit:

Another suggestion: 大匠風範 (great craftsman's model)