you start with one rail. preferably you have a straight referance edge to butt the rail against to ensure that it is straight. if you don't have a referance edge to butt the rail against you can use an indicator off of a straight edge as a reference. this step ensures that the first rail is parrallel to the intended line of movement and it ensures that any slight warpage in the rail from grinding is straightend out. after you have on rail straight, you use a sensitive dial indicator mounted to a carriage on the master rail to indicate off of the slave rail. slightly tighten the slave rail so that it can be bumped around. now run the indicator along the rail and bump it slightly untill the two are parallel. then carefully tighten the second rail. You can find the hiwin manual online that goes into more detail if you would like. |