hi siripon, There is a su-8 thinner that can thin su-8 down to any thickness you want. you buy it from microchem and mix it with your su-8 by a certain ratio, then it can be used. cheers Jiang Ziling On 4/23/05, Siripon Sukuabolwrote: > Dear All, > Please give me your advise and lab. experiment. > What is the most minimum thickness that can get from SU-8 spin coating? > Is it possible for SU-8 thickness of 0.3um? >