... used my thumb for this job! In these health and safety conscious days, I thought the pics should show a proper job! (It took me about 10 minutes to make the clamp...) Firstly, filing the backs of the tongues... Here are a single pair of rails clamped in the jig- notice that they are "handed" (foot to foot or head to head) and that the extent of the "planing" has been marked with a felt pen (off the Template) 1129_270910_280000000.jpg The jig has been set with the clamp in the "B" position 1129_270910_280000001.jpg After a few strokes with the bastard cut file, followed by the smooth cut file followed by a rub with 600 grit wet or dry wrapped over the smooth file we end up here 1129_270910_290000003.jpg You can see the the metal removal extends just up to the pen mark and that the rail is down to about the mid-way line at the rail tip. Now for the Guage Faces- here you see my nifty little clamp... ...