Through the 34 years of his teaching career, up until he retired in 1980, Lin would pass along distemper painting techniques when he came across particularly talented students. Apart from not charging tuition, he would also provide them with the use of expensive pigments, painting equipment, and a painting studio. Master and student would spend hours researching the genre, which has complicated techniques that are very time consuming.
直到 1980 年退休，長達 34 年的教學生涯，遇到有繪畫天份的學生，林之助就個別傳授膠彩畫，分文不取之外，還提供昂貴的顏料、畫具、畫室，師生們共同研習著技法繁複、創作耗時的膠彩畫。