The support staff at PennEngineering said that it would only take a couple of hundred pounds of force to push out a standoff, and to try tapping it with a hammer. There is no hammer in the machine room, but there is some unistrut, so...
1. On top of a rubber wheeled cart (to cut down on the shock to everything else) put the case flat on 3 parallel pieces of unistrut, with the hexagonal back of the standoff centered on one of the slot holes in one piece of unistrut. 2. Dropped a closed ended 3 ft. piece of unistrut on the standoff side a few times from a height of about 6 inches. 3. When the standoff was punched down flush with the inside pulled it out from the back with a pair of pliers. (I had put a screw in the standoff first, the blows alone would have shoved the standoff all the way through.) The case did warp out slightly (2mm?) on the bottom around where the fastener had been. To fix that, flipped it over, stood the standoff up over the hole (hex nut side down), taped it in this vertical position with some masking tape, and once again employed the 3ft unistrut as a hammer. A couple of quick taps and it was flat enough so that it would slide into the rack. Drilling the standoff out wouldn't have deformed the case, but at least this way there were no little metal shavings to worry about. Using a couple of fender washers instead of the unistrut might have reduced the size of the deformation. Or maybe not, as the dimple was round and about 2 times wider than the unistrut slot. The standoff seems little the worse for wear. The nut part was chewed up slightly by the pliers, but the cylinder part and the groove appear to be undamaged. Regards, David Mathog mat...@caltech.edu Manager, Sequence Analysis Facility, Biology Division, Caltech _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
