I’ve read on here that air erasers can be useful for finishing parts where it is too hard to reach
What media do people use with air erasers?
I have ordered 1, and it comes with Aluminium oxide, but maybe that will be too aggressive. Have heard someone mention baking soda…
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My curiosity is piqued.
I couldn’t see an issue with using baking soda its not as abrasive as aluminium oxide but will be better for the application as breaks apart on impact with the part surface.
I believe the statue of liberty was refurbished this way so should work fine.
I am going to try this, while most of my prints don’t require a lot of clean up, those that do this will/may help in that process, especially the hard to get areas. Does anybody have experience or ideas on which resins this works best on?
By air eraser… I presume you mean media blaster or sand blaster.
… and yes it is a MUST for final finish, presuming you are not painting.
The beauty of it is that you can file, sand and finish all the rought stuff, and end at 250-400 grit… then just media blast it. 100% perfect, uniform finish… EVERYWHERE!. All the sanding marks are gone.
Fine 400-600 alimunim oxide is fine (but not coarser). If you think it is too agressive, then go to a glass bead (the geometry of the grains is round and smooth, instead of sharp.
… but the take-away is BUY A MEDIA BLASTER! 
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By saying not painting… I only meantthat if you are, you don’t NEED that level of finish.
But if you are, it’s still a better finish than manual sanding… so in the end, i guess, even if you are painting.
We all know painting is easy… preping for painting is hard, and wheere all the quality is.
Common household baking soda is a good grit. Cheap and nontoxic. You already have it in your kitchen.
Resin dust is toxic. So wear appropriate protection.