After 2 months of testing, I still have problems with air bubbles. I followed all steps( less stiring, waiting air to exit an after put pressure in cavity, etc) . I tested the plastisol in microwawe, no bubbles.
Still have problem with upper pieces from molds, an air bubble like a tear , big enough, is there. The problem persists to all molds that I have, so for sure it s not a mold problem. Maybe I am doing something wrong....please help&advice!!