cabinetman

Here's one example. Without spending money on a prefab slide out tray, it can be made like a three sided drawer. Side mount or bottom edge mount slides will work. Either a 5/8" or 3/4" bottom, and self closing euro hinges. The drawer front when closed is flush with the bottom of the tray. When the front is down, it stops the keyboard from moving forward and gives a slight elevation to the palm.

This type of hinge could also be used.
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