polishing headlights

[vinnier6]

when wet sanding do have to use a block as on paint or just the paper

instead of using a block of wood, try using a small dense sponge so you can get the contoured parts of the headlight and keep full contact....otherwise use you hands....

[heatgain]

does the drill work better than the random orbit i use a pc 7424

I use both, depending on whether I have electric available. If there is electric available, I reach for the PC every time. Just remember you're working on plastic, so keep moving to keep heat down.

when wet sanding do have to use a block as on paint or just the paper

A block makes your strokes more uniform, but the shape of headlight lenses usually preclude use of a block. Just your hand with the paper should be fine on lenses.

Remember to always protect the surrounding paint.