Was wondering that myself after I looked at his page

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: : I have a happs trackball but mine works without the adapter power plug. Why is that on your list of necessary items?? Is it for the illumninated trackballs? Just curious.. : : : I used a 1/4 inch router bit and cut the depth of the plate so it would be flush to the top of my panel. I used contact paper and plexiglass on the top so if I made a little mistake it wouldn't show up. You can see some info on this in my modified control panel page in the modifying the top section. : : : Game on!! Brian : : : : : : Installing a Happ 3.5” Trackball question? : : : : I have just bought a Happ 3.5” Trackball. This came with a face plate – this is a square metal plate that’s about 2mm thick. : : : : If I want to install the trackball onto a ¾’ thick wood control panel, how is the trackball face plate installed in? : : : : Does a grove need to be cut out of the control panel that is the size of face plate down to a depth of 2mm (thickness of the plate)? : : : : If so, how is the grove cut out (ie what equipment, tools are used). : : : : OR : : : : Is the Face plate installed on top of the panel, so that it sticks out above the panel by 2mm. : : : : Look forward to anyone’s feedback that has installed a Happ track ball with the face plate. Your help would be appreciated. : : : : Kind Regards : : : : Dariusz

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