I want to ceiling mount my projector using this projector ceiling mount. However I realize my ceiling beams are too thin to receive the 4 screws necessary to attach it.
The only way would be, not to install it so that the square of the mount basis be parallel to the projection screen, but rather diagonally with an angle of 45 degrees (so that one of the 4 square corners directly faces the projection screen). In that scenario the mount would be attached to the ceiling with only 2 screws.
Note that the mount + the projector together weight about 4 kilos. The screws are 1cm in diameter, 5cm deep.
What do you think? Risky? Acceptable?
Best Answer
4 kg is not very heavy. 2 screws should be no problem, for the weight. 1 cm diameter screws are very strong and would hold 10 times that much weight. Even 4mm to 6mm screws would be plenty enough to hold up 4kg.
Based on the mount that you linked to, you should not need to install it at a 45 degree angle. The tilt section of the mount (as shown in the linked picture) does not rotate, so you probably want to keep the base square/parallel with the screen. The side holes will be enough to secure it.
Is this an exposed beam you are attaching to, or is it a finished ceiling (drywall/sheetrock or plasterboard) with the beam (rafter or joist) above it? If it is a finished ceiling, you also could attach a large board so that it reaches across two beams (such as 15mm to 20mm plywood, perhaps 30cm by 60cm or however far it is between beams), and secure the projector mount to the board. Four screws in the corners of the board to the two beams, and four screws in the corners of the mount to the board, would be very strong and secure.