Its a sacrificial metal and can be used as an anode. Perhaps the handiest feature is that you have a dependable source for a uniform piece of raw working stock right at your computer keyboard. For practical purposes it is the fines or sawdust type scrap that represent the hazard. Unless you are going to generate great amounts of machine scrap this risk is not unmanageable. If you plan to power saw this material we suggest you contact us for tips.
Sparks can ignite very fine sawdust generated in the sawing process.
See other information about magnesium throughout this website.