... nifty little clamp... Turn the rail over and re-clamp it at the heel end, the toe end clamp (previously my thumb) just clamps the tip of the switch and only covers the foot of the rail. 1129_270910_290000002.jpg In use, we use the file with its Safe Edge against the clamp 1129_270910_300000004.jpg It is quite hard to distinguish the rail from the jig in this pic- locate the rail from the red felt pen mark on the rail which again marks the extent of the metal requiring to be removed 1129_270913_070000000.jpg Here is the result after a few strokes with the big file- note that again the metal removal extends just into the red mark. When doing the guage face, I don't make use of any guide for the heel end of the file- the brass clamp is too low of course, I have never found this to be a problem, but others could modify the design to deal with this. Note that this is a STRAIGHT CUT switch: for a curved switch, I trap a scrap of etch waste under ...