OK first, a grinding rail is best out of wood, especially if you are a beginner. What you need is:
1) 2x6x10 board
1) 2x4x10
About 14 wood screws (or nails but screws are better)
Lay the 2x6x10 on the ground, 6 in. side down.
Put on the 2x4x10 on the board. the 2 in. side on top of the 6in side of 2x6x10.
Put pressure on the board and nail or drill 7 nails or screws on each side (7 for good luck).
Put a little wax on top and ride!
If you don't know how to ride and you think you already know, you're wrong, but its very easy front-side board-slide is the best way to learn. If you're regular footed, just ride up slow on the right side of rail manual and set the board up there, make sure to keep pressure on your back foot. If you are goofy, do the same but opposite side of the board. Now get out there build the rail!
In front of a rail, jump (A) then push (A) again. So, its just pushing A,A in front of a grind rail.
pick a speed character then when you see a grind rail jump and press jump again on top of the rail
By jumping towards the rail and then hit [] to grind.
grind
a darkslide is a grind, it is a trick in when you flip your sk8board with wheels face up and grind on a rail or ledge
Just jump onto a grind rail - Ratchet does have special grind boots in his inventory but these will be equipped automatically.
3feet
Jump on a rail while riding a thing that can grind and that's it.
Choose any Speed type character for example Sonic choose any level that has grind rails in them go up to one and press A then while in the air press A again you will successfully grind. Note: If you come up to another grind rail during grinding jump off the current rail and press A to land on the new rail.
You need to jump(A button)and right when you touch the rail, press the A button again in the air.
To grind in THPS3, you need to approach a grindable rail or edge at some speed. You need to be facing the direction you want to grind in (not perpendicular). Jump near to the rail or edge and press the grind button (triangle on playstation). Whilst grinding, press left or right to help balance. To finish the grind, press jump to jump off.
you jump on the rail and press square