the main thing u need to do is make a place for the paint to stick to. thats why u sand it to form little groves but if u go with to low of a grit u will see it threw your paint. i wouldnt go lower then 220
220 isnt gonna get you anywhere , because chrome is hardened and i mean its hard ..... 220 will only get you fine scratches in the chrome. Use 80 grit with a DA .... trust me after you make a few passes you will realise you cant hurt the chrome. Then after you scuff , get some self etching primer .... then your ready for color ..... paint like normal
D.A. stands for Dual Action.
The disc rotates and oscillates at the same time to prevent creating sanding patterns in the material that you are sanding.
If the primer you use has some filling capabilities then you don't have to worry anyway.
Don't use a belt sander. They are way too aggressive for something like this. They are made to remove a lot of material quickly.
I feel like your about as useful to the community as a poopy flavored lollipop
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