Convert an eBay air polisher into a microetcher
You can easily convert an eBay air polisher into a nice microetcher by simply switching from the standard sodium bicarbonate powder to aluminium oxide powder. As a dental hygienist, I use this setup to clean and etch (I acid etch too)enamel surfaces prior to placing sealants. I’ve been using 50 micron Danville aluminum oxide powder in one…