Oregon Beavers coaster

Three color Oregon Beavers logo coaster. I printed this with ABS using .3mm layer height with a total of 17 layers. Layers 1 thru 9 were printed with white, next I switched to black for layers 10 and 11, then finally to orange for 12 thru 17.
I have single extruder printers, so I have it lift and pause for 30 seconds while I change filament color.
The biggest problem is that the friend I printed it for liked it and wants a set of 12!
I need a two head machine. Or a better filament splicer so I could measure and splice it and not have change during printing.