[galleta_loco]

The old paint on this motor is flaking off revealing the glass smooth black underneath.What grit sandpaper should I use to give the surface some teeth without scratching it too deep?

 

[paint it black]

320 grit would be ideal. I suggest you prime it, and wetsand the primer with 320 grit again. Use a soft block to ensure you sand evenly, and it shouldn't gouge into the surface.

 

[galleta_loco]

Thanks

 

[galleta_loco]

Used the krylon primer for plastics and nissan paint my neighbor has a sign shop and whipped me out some logos.