Hey Guys: Just set up a cool jig for squaring the ends of v-slot and c-beam. A while back, I was looking at a "calibration disc" for my table saw. It's basically just a saw blade sized disc with no teeth, the idea is it gives you a nice flat surface to calibrate your fence, miter gage etc. against. Easier than using a saw blade cuz there's no teeth to get in the way. But, the better part of all this is that they make sanding discs that fit this device, so you can turn your table saw into a disc sander. This got the gears grinding, and I decided to get one. $30 later I had the disc and a pack of 100 grit sanding discs to go with it. I installed the disc and used a nice little machinists square to set it square to the table (vertical) and square to my miter gage. Then I took it back out and applied the self adhesive sandpaper disc to it, and reinstalled it. I set up my miter gage (I know it looks weird, its an Osborne miter gage that is kind of triangular in shape) and locked it into the slot by tightening the setscrews in the slide. These are normally used to take up the slack in the miter slot so there is no side-side play. Here it is all installed and calibrated Works like a ****! After a little fine tuning, it makes a perfectly square end on V-slot in seconds. Just put the piece against the miter gage, slide it up to the sanding disk, and apply a bit of pressure. It also works really slick for taking off that last half mm to tweak the length of a piece. I thought about doing this with a regular disc sander, but I would have had to fabricate a bunch of stuff to hold the v-slot square to the disc. This setup took a few minutes, uses stuff I already had laying around, and produces great results! MG PS Both Freud and CMT make these, mine was a cheap Chinese knockoff. Also InfinityTools.com and EagleAmerica.com.