I'm sorry CA, 'Purge Bucket' is an alternative to building towers and wasting bed space for filament changes. With a purge bucket the nozzle just moves to this location and extrudes X amount of filament at X speed and then goes back to printing and we can have multi material prints that take up the entire bed size. Here is my purge bucket installed in it's place.. Now I just need to create something that can follow the z axis and wipe the nozzle after the filament changes.