How to prep a subframe for Powdercoating?

[69TAPoser]

I plan on sending my subframe to the media blaster next week, then have it powder coated.

The subframe is fairly evenly pitted, not too bad, but about what you would expect for a 38 year old car from the Northeast.



I know that the powdercoat will not "fill-in" the pits. is there something that I can I do to prep the subframe after it is media blasted and before it goes to help smooth the powdercoating?

Thanks,

Phil