Whitney punch help

I have a roper-whitney punch no. 8 and like every other one I’ve seen its pretty ugly. I want to sand blast it and then powder coat or paint it. I know it operates with roller bearings so I want to take it apart first and keep important parts out of it during the process. Is there any part of this that would ruin it? Never done this and don’t want to ruin my very expensive tool, any help would be appreciated.

Thanks, Dan