Hi all
Can anyone tell me what focus lens distance needs to be when engraving using an X1390 100watt Redsail Laser Engraver. The machine came with a small plastic tool used to adjust the distance between the bottom of laser head and material but unfortunately it's been misplaced. I need to know the size so I can make a new one. We're engraving trafolyte material (plastic).
Many thanks,
Corina