Smudge in side window
 

When I was building my new system i managed to put a smudge in the side panel and I cant get it out... I used warm water and it became less visible but it's still there... any ideas on how to get it out?

i had a smudge from tubing on a side window and lighter fluid took it off. The lighter fluid didn't etch the acrylic panel either.

Try warm water and dish washing detergent. Don't use alcohol on the acrylic. It can cause cracks.