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Updated soldermask (markdown)

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Mark van Renswoude 2018-11-27 21:03:37 +01:00
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electronics/pcbfabrication/soldermask.md
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The polyethyleen prevents the paint from sticking to the transparency. I started out using cling film, which works but tends to wrinkle. A better alternative I found is a disposable sandwich bag.
[[soldermask/sandwichbag.jpg]]
## Applying the paint
1. Put some paint on the board. Not too much, we want a thin coat. Exactly how much and where to apply it initally is a matter of experimenting. Some people work from the middle outwards, I tend to put little blobs all over the board.
1. Put a piece of polyethyleen on top and cover that with the transparency. The transparency will prevent tearing in the next step.