Adjustable aperture masking?

[Photonbeam]

I heard from a freelancer I was working with about someone who got killed on a major tour when a gel frame fell out of the grid, and the corner penetrated his hard hat... not something I choose to think about too hard!

Wow, lotsa horror stories! Here's mine - I was standing on stage once when a gel frame fell from the truss, cut my nose, lip and chin and stuck in the floor between my feet. It coulda been stickin outa my friggen head - Yikes!
On topic-
I saw one of these contour gauges used as an aperture mask on a laser projector - I think it was the Who's but that was a lot of brain cells ago.

[dnar]

On a show long time ago..... Again in the 80's, Nick Cave and the Birthday Party, we had a "ring box" (cabinet containing 8 x JBL ring tweeters) vibrate forward and fall from the PA in to the crowd , breaking a guys arm and cracking a girls skull.

Cost the company a fortune...

Around the same time, touring with Hoodoo Gurus, in a pub gig, we had a front truss lighting tree unwind taking out half the front line of punters... Caused by a punter that lent on the tree winch pin (not locked out).

These incidents were are all before the days of OH&S. Things have changed...

[Phredy1]

A major OH SHIT

[Doc]

Theatre ghouls and ghosts at play.

[Stuka]

I use sheet metal plates, cut slightly larger than the aperture, painted to match the projector case.
They're fitted with the "loop" side of industrial-strength Velcro on the edges, and the aperture has the "hook" side along the outside perimeter.

Easily adjustable, works great!

[buffo]

At last year's ILDA conference, LaserNet shared a story about a terrifying scaffold collapse at one of their gigs. Here's the video:

http://www.citizentube.com/2010/07/s...s-central.html

LaserNet did not have anything do to with the assembly of scaffold. In fact, they repeatedly warned the show promoters that the scaffold needed guy wires to stabilize it. (It was shaking when the LaserNet people were climbing on it just hours before it collapsed.) The promoters ignored the warnings, and the video above was the end result.

No one was killed, but 5 people were injured, and a lot of gear was destroyed. Could have been worse though.

Adam