Placing a Plexiglas block on top of a mark on an overhead projector decreases the apparent depth of the mark. Turn on the projector and put the transparency on it. Focus the projector. Put the block ...

[Joel] wanted a huge-screen TV on the cheap, so he converted an overhead projector to something he can use with his XBox. Using a bare LCD panel with an overhead projector is a decades-old hack ...

please print on the recommended printer using the transparency setting or a low temperature setting (60-90 degrees Fahrenheit Not Suitable for: the overhead projector sheets are not suitable for ...