Hi all! I have a Universal Versalaser VL300 50 watt unit. We do A LOT of high volume industrial type jobs such as cutting and engraving different designs onto wood (in the thousands). I have found that the lens gets a bit dirty after a full load ( about an hour's worth of run time). So to make sure we clean it. This means, waiting 10 minutes to cool down the lens, cleaning it (5 minutes) and another 10 minutes before we fire it up again. This gives me a total down time of 25 minutes in between jobs.

Just wondering if anyone is going through the same thing as I am?
questions:

1) Do you clean your lens as often as 4 to 5 times in one 8 hour shift like I do?

2) how many minutes do you need to cool down then lens before cleaning and how many minutes before using it again?

3) Does having a 2nd set of lenses sound feasible, so after 1 hour's worth pull out dirty lens, stick clean lens and run machine again while dirty lens is cleaned. does this sound good?

4) Does having the machine run a full 8 hour shift ruin it? Or is it fine?

5) Can the machine be run 24 hours?

thanx for your answers. Just making sure I get the longest life span out of my ULS versa.