Hi all, hopefully some of you experts can give me a steer on this. I'm looking to create a precision table saw fence for a home-made table saw. So what I effectively need are two rails, with a straight edge sliding perpendicular to the two rails. I've been looking into using the V Slot rails along with either Vwheels or possibly even T slot nuts to allow the fence (another piece of V slot extrusion) to slide across - pretty much the same as any standard CNC build I've seen. Same sort of principle as this image: There are obviously a few issues to consider: The perpendicular fence needs to remain at perfect right angles to the rails as it slides across the whole length of the rails - I'm concerned that by using either the VWheels or T Slot nuts will have a small amount of play in them at either end which will either cause the fence to stick or will mean one end is millimeters out from the other The fence needs to be locked into position - I'm less concerned about this, as I can fashion a cam lever to clamp it locked Once locked, the fence needs to be rock solid. As I push the wood against it and run it through the saw, there will be a fair bit of pressure against it Without buying all the parts to test, can anyone give me an idea if using V Slot extrusions and either wheels or T Nuts sounds feasible? Thanks very much for any help & advice!