I'v never heard of an aerosol can sandblaster, but there are some options. Harbor Freght sells a small pistol sized sandblaster with its own hopper mounted on the top, but its a toy for the most part.
As for small being less likely to damage I dont think thats the case nearly as much as proper masking preventing unintentional damage. You get the same thing with a small sandblaster as you do a big one, high speed flying abrasive particles, just less of them flying out of a small one. But even a small one will cause damage if you dont mask your target well.
You might want to look into Rayzist photo resistive film for blasting small objects with fine details.
And if you plan on doing alot of them a small or medium sized blast cabinet would be recommended. |