A simple shelf that can be used to extend desk space or attach to most existing shelves. The design uses a standard bolt mechanism to ensure that the shelf is very sturdy.

The project contains two sizes for the clamp (26mm & 40mm) which should allow for many applications. If neither of these sizes are what you need or you want to make the table larger, I've also included is the fusion 360 project file with parametric inputs to easily scale to whatever size you require.