Hello guys , I need some assistance in the ink preparation for the LPSM .Currently I am using Peter's ink and really interested to know what should be the correct rpm for the ink preparation and for how long the stirring should be . I have encountered soldermask bubbles defect . Do temperature in the room affects the bubbling so much although I do understand low temperature do help in reducing the bubbling . Please advise . Thanks. HHTong E-mail : [log in to unmask]