Hackers Help: How to hack this corner kitchen cabinet for SEKTION?

corner kitchen cabinet sink hack
Source: nwhomeworks.com

Has anyone managed to get something like this sink hack working with Sektion cabinets?  I need to convert a corner base, lazy-susan cabinet into a 45 degree, 1-door cabinet for my sink but the 18″ door is too small for the opening (outer corner to outer corner is more like 20″).  I can’t cut down a door since I’m using Bodbyn and it would ruin the style.  Any advice would be greatly appreciated!