Sand paper needed for bumpers?

[MarClio]

My side stripes and bumpers are colour coded, but the previous owner didnt do the best job, im thinking of sanding them down and redoing them. Im not sure which number of sand papers are needed? Anyone help?
And am I better leaving the front and back bumpers on and spraying them and removing the side stripes? Thanks

 

[Chapster5]

800 to rough it up for the paint, 1500 and water to smooth new primer/paint

 

[MarClio]

Do you not rough it up with 800, smooth it with 1500 then primer, paint then lacquer??

 

[DanEdser]

lol i used 250 to rough it up xD

 

[Chapster5]

Jesus Dan! LOL Nothing like taking gouges out

and no 800 will give the paint a surface to key to the 1500 smooths out any dimples in the paint or overspray on them (blobs) be careful when flatting (1500) because if you get a bit to vigorous you will have to repaint again lol!

 

[MarClio]

Jesus Dan! LOL Nothing like taking gouges out

and no 800 will give the paint a surface to key to the 1500 smooths out any dimples in the paint or overspray on them (blobs) be careful when flatting (1500) because if you get a bit to vigorous you will have to repaint again lol!

Im bein stupid here lol, so sand with 800 then paint then smooth with 1500? That what your saying?

 

[Chapster5]

Pretty much mate,

When you have done your primer layer smooth any bits out with 1500 (with water and a bit of washing up liquid to lube) gently until smooth make sure its 100% dry first though lol