Hey,

Thanks, i've got 10 playfields going for other people, finished 4 already.

Sanding with 600 grid is to give the new clearcoat something to adhere to.
It helps also with leveling but more leveling is achieved with multiple coats and sanding inbetween.
It is dangerous to sand to much before clearcoating because you can loose artwork, especially around holes and the borders.
All sanding is done with an orbital sander, apart from the borders wich are finished manually.

I normally put up to 4 heavy coats for leveling, they all get sanded back to almost nothing just to level out the playfield and
then 1 normal coat that gets sanded with 1200 - 1500 - 2000 and then polish to give a nice shine.

I have no photo of the end result (i forgot to take pictures) but here is one i did before, already posted this one in my introduction



hope this helps you
grtz
free