block sanding blues

spot putty is fine as long as its the good stuff and it should only be put on in thin coats because certain spot putties tend to crack while drying if applied thick.

Or what I like to use is bondo GOLD ....its a softer "frothier" bondo that applies nice and smooth but still with the solid finish of bondo after curing.

to knock bondo down I would use some 80 and 120 grit paper.

then go over it and smooth it off with some 220 or skip over to 320 grit.

I use 400 and or 600 for final sanding.

if you want to do it "right" than you need to stop with the rattle cans.....because its not the "right way" to get a nice looking paint job.

you can pick up a gallon of high build sandable primer from your local parts store for around $50.00

reduce it down 1to1 with lacquer thinner and spray the car down with it.

then go back over it all with 400 or 600 and knock it down smooth.

Then you need to spray your sealer and directly after spraying your sealer you need to spray your color and directly after that you need to spray your clear if your doing base clear.

as said above you do not want to sand with 1000 grit....when I wet sand and buff paint AFTER the car has been painted and clear...I normally START with 800 and work my way up to 2200 grit.....and these grits are pretty much meant for polishing!.

1000 grit is to fine and will smooth the surface off to much and when paint is applied it will sit on top of the sanded surface.....where as if it was a course grit ....the paint would seep down into any sand scratch grooves and adhere to the surface you are painting.

good luck and hope some of this helps