I'm looking at getting copper for homemade 2 sided boards. Can someone tell me what positive coated sensitized copper clad is and how it differs from the uncoated? Which is better (easier) for home-made? Last question, it's been a while since I've really done pcbs, does the weight (1/2, 1, 2 or 4 oz) make a huge difference? Is that mainly about load?
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