any tricks for using bigass pc's?

Another technique is to use corian two by two samples with an old Navcom isolation device with the sliver ring seated on top of the corian. This works with most power cables. With a tall amp you may need two corian samples stacked.

Hope this helps, Al

I fabricated some support blocks from lefover 2X4's, experimenting a bit to get just the right height. If necessary, file or saw a small rounded indentation notch at the top of the woodblock which fits directly with the cable being supported. Slip it under the cable first, then bottom the block onto the component shelf. The block lifts the cable just slightly as it "snugs" into place, holding it & the cable nicely in place. I didn't even bother to paint the blocks; can't be seen from the rack front anyway.

Cardboard tubes cut to length also work fairly well if the weight isn't too much. Paper towel tubes, T.P. tubes, wax paper or kitchen foil cardboard tubes do the trick, & form their own rounded notch under the cable as they're slid into place. I used to have one under an amp's heavy AC cord; the bottom of the tube rested directly on the floor behind the rack.
These tricks work best with *heavier* components of course.

I just buy a $1 piece of that gray pipe insulation from Home Depot. Comes in 6 foot lengths. I then cut a piece just large enough to fit b/w where the cord goes into the gear and my rack. This is very good b/c you don't have to glue things to your rack and if you change cords or adjust your rack it's really cheap to cut another piece. Plus I use it to seperate the digital cable/ICs from being too close to each other and PCs. PLUS, I use it to keep speaker cable off the carpet, Plus....well for $1 per 6 foot run I use it for lots of stuff! ;~)