While I was in graduate school a professor of mine did some extensive research about this. Our Pilot didn’t have a chase, and the budget that year was pretty restrictive, so while we waited for the on-campus machine shop to make a chase for us we built the chase into our CNC-routed blocks.
Take a look at the following video for more info (CNC chase demo starts at 7:16)
https://vimeo.com/38485036