I mark my striker blanks with my bandsaw. I set up my fence to guesstimate center with the blade. I make a cut about 1/8" deep, flip the blank 90 degrees, cut again, flip 90 degrees, cut again, flip 90 degrees and make final cut. If the fence is lined up on center, the 3rd and 4th cuts will end up in the same mark as the first 2. If it is a bit off, I make the needed adjustment before marking (cutting) the other end. This also helps by allowing the 4 teeth of my head center to catch in the cuts.