Under my avatar is a web address. It is r u b i k s m a s t e r .com (if I type it in without the spaces, it calles it banned advertiser!) On that site, click forums. Select the cube modification area. There is a guide on there on how I made a rubiks borg cube, my tactile cube and the tardis cube. The borg cube is the most detailed of the three guides. I recommend you look at it first.
Thats how I modify a cube. Others do more invasive mods, whereas my mods are merely aesthetic - designed to look good but not interfere with the internal workings of the cube.
Please take off topic discussion off this forum. Thanks.