Flexible Drill bit guide

I didn't want to pay $20 or more for one of those flexible drill bit guides from the big box stores so I threw together a quick example of one. The long bit feeds into the guides diagonally and the bit and guide is fed into the hole for better aiming of the long flexible drill bit. This is very a very simplistic design. The original prototype did not have the rib down the bottom of the design which allowed for a little too much flex. I would highly advise to print out of a more rigid filamen