On 10/26/2011 10:54 PM, wrote:
http://www.flickr.com/photos/2768312...in/photostream

Previously when I saw pits like these I thought it was caused by pin
holes in the resist. There was some discussion about its here. I
firmly believed that it was the hydrogen bubbles cavitating causing
this. However, in this case there is *no* resist!

Michael Koblic,
Campbell River, BC


Looks like your etch found some weak spots to exploit.

Is it like that all over? Or just along the bottom?