King, no dis intended but it sounds like you have none or very little sandblasting experience.
What you should do is go back and read athomas's post #15. Read it about 25 times because he is spot on about everything. If you still intend to go the sandblast route please be sure to read this...
https://www.cdc.gov/niosh/docs/92-102/default.html
On the other hand, somone has already mentioned electrolysis. It's cheap to set up compared to sandblasting, less messy, and less work. If you don't understand it, read about here...
https://antique-engines.com/electrol.asp
or search youtube for electrolysis.
Whatever you do, have fun!