This mouse adapter is designed to give people with limited use of their hands a way of more comfortably using a wireless mouse. The design is based around the AmazonBasics wireless mouse, which is robust, inexpensive, and easily obtainable. The parts were all designed with FFF in mind and can be printed on a single platform on most medium sized printers, so be sure to check out the image gallery for recommended part orientations. 

The adapter assembles quickly using standard hardware and is geared towards making mouse features larger and more accessible. The design features a wrist support so the user can leave their wrist straight instead of reaching forward and down at an angle to click the buttons. It also makes the buttons much larger and brings the scroll wheel towards the user - all without sacrificing the middle click function. The power switch and battery cover are still accessible below the mouse for easy maintenance.

Hardware recommended: (lengths are just what I used - the design allows for some wiggle-room):

6 x 1/4" 4-40

2 x 3/8" 4-40

1 x 1/2" 4-40

Assembly:

After printing all pieces, put the mouse into the Base so it sits firmly against the front. Push the Mouse Brace against it, and secure with two 1/4" 4-40 screws. The mouse may wiggle a little bit but should be held firmly when placed on a flat surface. Next, install the Wheel into the Wheel Brace with one 3/8" 4-40 screw on each side. The wheel should spin freely but not wobble side to side. Use super glue or threadlocker to ensure it doesn't come out after repeated spinning and pressing. Attach the Wheel/Brace assembly to the Base with a 1/2" 4-40 screw. This screw should be snug, but loose enough that the Wheel can be pressed down to do a middle click (it can be adjusted later.) Last, put on both Clicker Plates and secure with four more 1/4" 4-40 screws.