Gallery 7 - Mask System << Previous Gallery  |   Theater Home Page  |   Next Gallery >>

Screen Border

This is the original painted screen. It had a border of 3" wide black theater tape, the type used in set construction. It does not reflect light so is very black.

Original Mask System

The original mask system was a series of pullys and wire. This shows the horizontal mask rails and pullys. The masks themselves are foam core covered with black theater cloth.

Original Mask System

The rollers on the mask sit on a track attached to the wall. The rollers are the same as the pullys. They are double hung window pullys you can get at the hardware store.

Original Mask System

The cables and pullys for the horizontal and vertial masks.

Original Mask System

In the bottom corners, double pullys were needed. This is just two of the window pullys stacked.

Original Mask System

All four masks in place. The top and botton, and left a right masks are on different wires of the same pully. So if you, for example, pull the bottom mask up, the top one comes down.

Original Mask System

If I had kept this mask system, the brackets, bolts, wires, etc. would have been painted black. The problem with this mask system is that it had to be moved manually. I wanted it automated.

Second Mask System

The second mask system. The horizontal masks remain pretty much the same and are manual, though the pully system was removed. You now pull them in individually. I watch so little 4x3 material this is fine. This mask system has now also been removed as it is not needed with the CIH setup. A Third mask system was built. (See later gallery.)

Second Mask System

The vertical masks now hang from black nylon thread.

Second Mask System

The thread runs up to pullys above the screen, to the right, and then back down to the mask control arms.

Second Mask System

The threads connect to arms connected to servos. The servos move the arms which pull the mask up and down. The servos are contolled by my home automation computer using a USB controller board and some software I wrote. (Yes, those are sections of a yardstick. Hey, in a pinch...) The machanism was painted to match the wall and was hidden by the front speaker.

Second Mask System

The servos are not super strong, so the masks are counter balanced by these cans which have rocks in them. They are hidden by the decorative side panels that sit on the sage.