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Foam information

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Cut them into a star pattern, with 6 or 8 points. You can use a straight regular old razor blade. Buy a pack of them (I think a box of 5 is about $2 and can be bought and hardware stores, wal-mart, or most gas stations). If you don't want to deal with cutting your foams, you could buy some pro-line memory foams. They are the cheapest memory foams that I've found, they work GREAT, and you don't need to modify them to have REALLY nice foams. They also perform much better than regular foam.
 
If you have the right kind of electric knife where the blades extend all the way to the tip, that's the best thing you'll find. Those knives cut through foam like a hot knife through butter. I found that a serrated blade tended to "chew" the foams or tear little piece as it cut. If you use a BRAND NEW razor blade so it will be sharp, you should just be able to cut straight down and get very crisp lines. I still say the memory foam is the way to go if you can afford it. A new set should set you back about $14, and you can pick them up used for a little bit of nothing. They react SO much better on the rocks than conventional foams.
 
As stated in the last post like this, I just used a new Razor Blade, use a marker to draw out a star design on the side of the foams, then use those lines to just ease the blade down, Also took like .2-.3 in off each side of the foam to let it a little more loose.
 

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