This is just a re-post of Bratan's Models, Diabase (Flexion) asked me to make everyone on Thingiverse aware that this works well on the Ender 3 as well as Bratan's original intention of mounting the flexion to his CR-10.
FOR INSTRUCTIONS -
Go to @Bratan original post as he did a fabulous job on this setup. Thank you Bratan!!!!
Disclaimer - I DID NOT DESIGN THIS - All Credit goes to Bratan as he made this possible for all of us. Thanks again Bratan!