Hi All.
Been thinking(bad for me) and I thought why not use a timing belt for the X-axis on a router system. Two lengths of belt could be stretched along each side of the X-axis and interconnected timing pulleys could supply the drive.
So is this feasable and what backlash would be in the system, the pulleys could also negate the need for a bearing as they would run along the belt.
Not sure about tensioning the belt as yet just in the thinking stage.

peter