The best thing would be put the first layer, pre-bake and then to pour the thick layer of SU-8, I mean, just evaporate the solvent. --- Den tors 2008-08-07 skrev jiang Liudi: Från: jiang Liudi Ämne: Re: [mems-talk] Su 8 thickness Till: "General MEMS discussion" Datum: torsdag 7 augusti 2008 09.22 Hi, Thanks. I put SU8 down directly on pyrex wafer. could I ask when you spin thin layer first, do you bake it before spin the second layer?