I recently have been having an issue with a vertical line appearing in my etching see attached. Doesn't happen every time but from what I see it appears to jump. I'm using a Universal VLS4.60.
Any Ideas as to what this is?
Brad Raynor
Universal VLS4.60 60 Watt
Universal VLS4.75 75 Watt
Laguna EX 200 Watt