Hey guys i had my first boards made with castellations, and the red soldermask has gone down into the holes and is an issue. The holes were set to 30 mil which i have had 30 mill holes all day long without this soldermask issue (it completely covers some of them). The board house came back and said they should be 1.2mm minimum to allow the soldermask to wash out.
Has anyone had this kind of issue before.
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