I bought some small thin metal sheets and a punch set from Amazon. Made a couple of copies of my ledger recovery phrase and then split them into 2 pieces which I keep in different locations. Having the words punched into metal makes me feel a lot safer than having them written on paper!
others engrave it on solid objects but what you did is simillar to them , yours are just handy and easy to carry but dividing them and hiding the other part on another storage sounds risky because you can forgot them or other people will find it out and do unwanted things with it .
for me i dont divide my keys or phrases but i make more than one copies instead and store on differrent locations .