Don’t do it. More than harmful, also damaging to the laser. Do what I might do, laser cut a Jig out of wood or acrylic and then draw onto the LP, then dremel or other cut it by hand if you don’t happen to have a CNC mill/router. I know how awesome they look but it’s not worth the risk/damage.
ps. no the filter won’t be enough, plus most countries have environmental laws that won’t be happy.