Painting plexiglass

[Elenril]

For my mod I plan on painting the inside of the plexi window, and I have a few questions I was hoping someone would be able to help me with:

1. I've done some research, and everyone seems to use spraycans. I much prefer to use paintbrushes. I also think it would be easier to use a brush because there a smaller details. Is it okay to use a brush?

2. If I use primer, and put it on the plexi before the paint, will this affect how visible the paint will be? (because the primer will be underneath the paint, which means it'll be on top of it when you look at the window on the normal side)

3. Do I have to use primer?

4. Are there any special procedures (eg sanding) that I have to do with the plexiglass before I paint it?

5. Is there anything in particular that I MUSN'T do?

[Bucko]

If you are painting from the inside, you don't want to use primer, all that will be ALL you see. Also remember you have to work backwards.
Say for example you are painting a bush with flowers, you'd need to paint the flowers first, then paint the bush over the top of it.
It also means if you wanted to touch up any minor details, you are pretty much stuck.

If you sand the plexi, it will just look like sanded plexi from the otherside with a little colour coming through. You'll lose the details.

Basically find some paint that is ok for plastic and go for it.

[.Maleficus.]

1. The thing about using spray cans, is there are paints specially made for plastics and such that work very well for plexi. You could use a brush, but you'll need to do some searching around for what works and what doesn't.

2. Yeah, try to stay away from primer.

3. Same as 2.

4. If you use a spray can, then you do want to sand it. I painted the jewel on my Xbox (the thing at the top that's green and says "Xbox") and after I got the green off, I sanded it till it was nearly all opaque, put on my red paint, and it looks great. Sanding helps the paint bite in and really stick to the surface that you're painting, and when you look through the other side of the plexi, you'll have a very nice gloss. Just make sure to was off the dust before you paint. Just don't sand the side you're looking through.

5. Can't think of anything. Except start before you're totally prepared. Experiment first. Don't jump the gun.