Pulse_

Hi,

sometimes after a few runs the paint goes off the body in some spots when I paint it with rattle cans, so maybe I'm doing something wrong

here is how I do it:
- I scratch the body with the green side of a sponge
- I clean it with soap, rince and let it dry
- I warm the rattle can so that the paint becomes thinner
- I apply in thin coats and dry them with a hair dryer each time

am I missing something?

BillyT.

iTrader: (4)

Is it rubbing? Do you put tape on back side of body in potential wear spots?

And warming can doesn't make paint thinner, but it does increase pressure which give you better atomization at nozzle which is still a good thing.

Pulse_

no rubbing, but I didn't put tape before.. now I do

new body is painted, protected and used one time..for now it's looking good

rider313

iTrader: (94)

Possibly to thick on your first coat.

BillyT.

iTrader: (4)

I wouldn't let the water just evaporate from the body either(dry) Might be leaving some deposits that affect how well the paint adheres.

Wipe it down with isopropyl alcohol before you paint, or wipe the water off the body at the very least, before it drys.

kodack10

Usually rattle cans are solvent based so there won't be any water to evaporate. If you're talking about the paint de-laminating (falling off the body) and not abrasion from tires, body posts, etc rubbing on it, then it may be a prepwork problem.

Acrylics and enamels stick to lexan just fine but not to grease, release agents or oils like in your fingertips.

Sometimes simply rinsing a body out with warm soapy water isn't enough to remove all the release agents and oils that can get on a body. I typically wash and use a light nylon brush to scrub, and warm soapy water. Once I dry it with a microfiber cloth I give it a once over with rubbing alcohol which acts as a solvent for many oils. I then do a final rinse with de-ionized water.

This is the best way to prep something for painting that I know of and you're assured your paint will have a good bond.

When paint starts falling off, flaking, de-laminating, its because it didn't adhere well enough to the body to begin with.

Very rarely you will find that the paint you sprayed with can't be used directly on polycarbonate. In those situations you have to put a base layer on first which does adhere to the lexan, but it also adheres to regular paint, giving you a durable finish.