Our Tuesday night Open Meeting and Making is geared to visitors and always includes a tour of the space and a "Show & Tell" session during which we share info about the projects in progress, but there are people frequently working on projects there most evenings, weekends, and late nights.
You do not need to be a member to attend this event or use our equipment to make cool things. (But there must be a member present for you to work in the space.) Anyone entering LVL1 for the first time must sign a waiver of liability (http://wiki.lvl1.org/Waiver). (There's a kiosk right inside the door.)
Check the calendar on our events page (http://www.lvl1.org/events/) for details on this and other upcoming events and workshops.