Hi Folks Just sent a pile of fairly badly surface rusted parts to be sand blasted and powder coated. Old Chevy pickup running boards and inner fenders etc. Decided to have them powder coated at the sand blasters to prevent any flash rust etc. They will be in storage for a bit..... Question is...what is the procedure to prep the parts for paint at a later date.
Someone else can correct me if I am wrong, but I have just sanded the powder coat not much different than if it were paint.
Scuff with scotch brite and squirt. Powder is an expensive rust preventative if you are just planning on painting over it at a later date though....
If it were me, I would have the parts sprayed with an epoxy primer instead. It would be easier to fill any heavily pitted pieces or other imperfections prior to prepping for paint. Probably cheaper too. Same proceedure for powder coat or paint prep at a later date. Use a degreaser before sanding, The important thing is the compatability of subsequent steps in the finishing process. For instance, a high build primer very well may bond better to the epoxy than powder coat. But yes, you could just scuff the powder coat with 220 grit
I'd be interested to know what primer to use on powder. When I bought my I beam, it was all ready powdered, but id like to change the colour. Thanks
Get a high adhesion primer formulated for use on non porous surfaces. I find that when in doubt of what products to use, ask the pro behind the counter. They are the guys that get the feedback from their customers every day.
I’m not a big powder paint fan unless it for high heat stuff. I’ve seen water get under it and rust bigtime
Powder coat is less forgiving especially when subjected to impacts from stones or metal stress and fatigue, thus a greater chance of moisture infiltration. I never really cared for its use in anything other than purely cosmetic purposes and I'm more of an old beater dude as well.
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