This is what i have been doing at work for the last few weeks. Normally we make these work platforms and they have 2x2 sq tube posts and welded cross bars from 1 1/2" tubing. This batch of platforms has 1 5/8" formed railing with cross rails that need coped. So i have like 390 rail sections to fit and tack together for the welders. Plus they have pockets that the rails sit in and need to all be removable. I have found the quickest way to cope the 1 5/8" tube is with a grinder and 36 grit sanding disc. Like 30 seconds per end. Just measure between the uprights and add 1/2". Then scribe a line 1/4" from the tube end and grind to the line while feathering to the center of the tube then roll the tube 180 degrees and do the other side. Piece of cake...Bob