- Joined
- Nov 27, 2012
- Messages
- 7,912
Don't know what the goal is that the OP is after, if sanding smooth means just that or wanting to remove all those pits or casting voids. If the later, sanding alone is going to take forever to get all those pits out even under power. If those are indeed casting voids, machining to remove material is going to change the dimension of that part considerably if that matters and who knows if there will be more casting voids throughout the part if they are casting defects.