Table Saw Fence

I am working on a low cost but accurate fence which can be adapted for almost any table saw or other table based stationary power tool.

The current table I am using this for is 40" x 27" but I will build it using 1500mm v-slot to allow for expansion. I have decided to go with rollers instead of linear bearings because I have access to rollers but I also believe the linear bearing will tend to get debris such as saw dust in between the rail and bearing.

The roller axis of rotation will be parallel to the table face to limit debris in the roller path, allow gravity to clear out debris, and ensure the tension force is properly held to the axis of the wheel bearings instead of shear force.

I am not sure about the brake mechanism or the piece of 20x20mm for it but that is the theory I was trying to explain.

I am pretty sure I could put the spacers and bolts to attach the rail to the table at the same slot as the rollers but it would be hard for you to see in this picture. I also think the brake could go in the same slot which would reduce shear forces.