光阻材料，12" x 19"（2片裝）

The 12x19 size gave me plenty of room for a detailed circuit board layout, and both sheets exposed evenly under my UV lamp. I love that it’s pre-sensitized, so I didn’t have to mess with mixing chemicals before starting.

I needed a reliable light-sensitive material for my home photolithography projects, and these 12x19 sheets fit the etching system perfectly. The exposure was crisp and the resist held up well during development, even on my first try.

These sheets expose evenly across the full 12x19 surface, which makes a huge difference when I'm doing larger photoengraving plates. They cut cleanly with no ragged edges, and the second sheet is a nice backup when I mess up the first attempt.